Showing posts sorted by relevance for query John Finnis. Sort by date Show all posts
Showing posts sorted by relevance for query John Finnis. Sort by date Show all posts

Friday, April 21, 2023

Evolutionary Psychology Denies Finnis's Metaphysical Natural Law and Confirms Locke's Human Natural Law

Evolution and Human Behavior has published (online, but not yet in print) an article by Carlton Patrick--"Evolution Is the Source, and the Undoing, of Natural Law."  Patrick is a lawyer and a Professor of Legal Studies at the University of Central Florida.  

Previously, I have written about the book that Patrick coauthored with Debra Lieberman--Objection: Disgust, Morality, and the Law (2018).  I said that the main argument of Lieberman and Patrick in that book is a syllogism:  since evolutionary psychology shows that moral emotions like disgust are irrational in ways that are dangerous to society, and since the law should be based on rational principles rather than irrational emotions, disgust (and other moral emotions) should be excluded from the law.  I said that that syllogism is false, because the premise that moral emotions like disgust are utterly irrational is false.  I argued that research in evolutionary moral psychology shows that moral judgment always combines reason and emotion in a complex interaction.  Consequently, moral judgment cannot be properly explained by either a purely emotivist theory or a purely rationalist theory.  In explaining moral judgment in this way as the conjunction of reason and emotion, evolutionary moral psychology confirms the tradition of naturalist moral philosophy that stretches from Aristotle and Thomas Aquinas to David Hume and Adam Smith and then to Charles Darwin and Edward Westermarck. 

Playing off the title of Patrick's new article, I would argue that evolution is the source of natural law as interpreted by Thomas Aquinas and John Locke and the undoing of natural law as interpreted by John Finnis and Robert George.  Patrick's mistake is in assuming that Finnis's (and George's) Kantian distortion of natural law as based on some metaphysical or cosmic order of reason beyond human nature is the correct interpretation of traditional natural law.  He thus ignores the fact that the natural law as understood by people like Aquinas and Locke is rooted in human biological nature in a way that can be confirmed by evolutionary moral psychology.

Patrick begins his article by identifying the proponents of the idea of natural law as including Aristotle, Aquinas, Grotius, Locke, Dworkin, Finnis, and George.  He then singles out Finnis as "the father of the modern natural law argument," who insists that natural law must be founded on "moral objectivity, be it established by God, the universe, or some metaphysical source."  In this way, natural law is based on some "supernatural or metaphysical explanations" that transcend human nature.  For Finnis, this metaphysical order dictates certain "basic goods"--life, health, knowledge, play, friendship, religion, and aesthetic experience--that are "fundamental, underived, irreducible."

Patrick can then argue that evolutionary psychology refutes this metaphysical conception of natural law.  He explains:

". . . when we talk about morality, we are not talking about a cosmic mandate but rather a set of species-wide psychological instincts that are a part of human nature.  These instincts evolved because, over evolutionary time, they helped our ancestors to navigate the highly social world of the evolutionary milieu.  Although there are differing views, most evolutionary scholars agree that the general functions of morality are to avoid, navigate, and resolve conflicts of interest in social interactions" (3).

So, if Finnis's metaphysical interpretation of natural law as founded on a "cosmic mandate" is correct, then evolutionary psychology refutes natural law.  

There are two problems here, however.  Patrick simply assumes without proof that Finnis's metaphysical interpretation is correct.  And he fails to consider the possibility that there are better interpretations of natural law as founded on human biological nature that could be supported by evolutionary psychology.

There have been many critics of Finnis's interpretation of natural law--including Henry Veatch, Ralph McInerny, Russell Hittinger, and Anthony Lisska.  Patrick does not mention, must less answer, these critics.  In a series of posts, I have indicated why I agree with the critics.  The primary criticism of Finnis is that his version of natural law is natural law without nature, because he rejects the traditional understanding of natural law as rooted in human nature--in the natural desires or natural inclinations of human beings.  Finnis actually admits this when he dismisses "the rather unhappy term 'natural law.'"  He doesn't like the term "natural law" because it implies that it is rooted in human nature, and that is what he denies (Natural Law and Natural Rights [1980], 35, 198, 280, 374).

Moreover, Patrick does not see that the traditional understanding of natural law is rooted in the principle (as stated by Aristotle, Aquinas, and Locke) that "the good is the desirable," which supports natural law as founded on those natural desires distinctive to human biological nature.  This corresponds to what Patrick calls those "species-wide psychological instincts that are part of human nature," which are studied by evolutionary psychologists.  I have defended this position in Darwinian Natural Right: The Biological Ethics of Human Nature (1998).

Patrick also does not see that natural rights in Locke's state of nature correspond to the natural instincts in what evolutionary psychologists call the "environment of evolutionary adaptedness" (EEA).  I have written about this in various posts (herehere, and here).

This leads me to conclude that while evolutionary psychology denies Finnis's metaphysical natural law, it confirms Locke's human natural law.

Tuesday, June 04, 2019

Is Masturbation Worse Than Rape? Thomas Aquinas's Esoteric Writing About Sodomy

Among the sins of lust, according to Thomas Aquinas and the Catholic Church, the greatest is the "sin against nature," which includes masturbation, homosexual intercourse, bestiality, and any "unnatural, monstrous, or bestial form" of sexual activity--such as fellatio, cunnilingus, or interfemoral or anal sex (Summa Theologica, II-II, q. 154, a. 11).  Traditionally, all these forms of non-procreative sex--with orgasmic pleasure achieved outside the coital insertion of a penis in a vagina--have been condemned as sodomy.  Aquinas indicates that the first obvious objection to this is that surely the sins of lust that harm our neighbor--such as adultery and rape--are greater sins than the sins against nature that harm no one (ST, II-II, q. 155, obj. 1).

In response, Aquinas bites the bullet and replies to this objection by insisting: "Just as the ordering of right reason proceeds from man, so the order of nature is from God Himself; wherefore in sins against nature, whereby the very order of nature is violated, an injury is done to God, the Author of nature" (q. 155, a. 1).  To support this claim, he quotes a passage from Augustine's Confessions (3.8.15), in which Augustine speaks of the "disgraceful acts against nature" (flagitia contra naturam) committed by the people of Sodom (reported in Genesis 19) as a violation of God's law deserving God's punishment by annihilation of the city. Augustine explains:  "the social bond which should exist between God and us is violated when the nature of which he is the author is polluted by a perversion of sexual desire."

Notice what this means: masturbation, fellatio, and cunnilingus are worse than rape!  Most of us--including most Catholics--will find that hard to swallow.  Some readers--myself included--will find Aquinas's reasoning here so implausible that they will suspect that Aquinas himself does not believe it, and that he is engaging in some esoteric writing--suggesting that his exoteric endorsement of the Catholic Church's condemnation of the "vices against nature" is stated in such a way that careful readers will see a secret teaching contradicting the public teaching.  (Previously, I have written posts here and here about Aquinas using secret writing to take the side of reason against revelation while living in a community where the Church enforced belief in revelation.)

This raises at least two questions.  Are there any persuasive arguments for condemning and punishing all forms of sodomy as contrary to natural law?  And if these arguments turn out to be remarkably weak, does that suggest that there might be some hidden motivation in the Catholic Church for professing these arguments--perhaps a hypocritical opposition to homosexuality from homosexual priests who live double lives?

My post here is on the first question.  My next post will be on the second.


THE THOMISTIC NATURAL LAW OF SODOMY

There are three strange features of Aquinas's reply to that objection.  The first is that the quoted passage from Augustine's Confessions does not explicitly identify the "disgraceful acts against nature" committed by the people of Sodom.  The Old Testament is not clear about whether the people of Sodom were punished specifically for homosexuality or for some other misconduct.  Shortly after the passage in the Confessions quoted by Aquinas, Augustine quotes Paul in Romans (1:26) as condemning lust for "that use which is against nature."  But Augustine does not quote the entire passage from Paul here identifying this sin against nature as homosexuality: "Among them women have exchanged the natural use for the use which is against nature; and men too, giving up the natural use of women, burn with lust for one another" (1:26-27).  (This passage from Paul in Romans 1 is noteworthy in that it is the only statement in the Bible that condemns not just gay men but also lesbian women.)

The second strange feature of Aquinas's reply is that he does not challenge the objector's claim that the "vice against nature" does not harm other human beings.  This is a crucial point for determining the legal regulation of sodomy, because since Aquinas says that it is not proper for human law to prohibit all vices, but only to prohibit those vices that are harmful to others--such as murder and theft--it follows implicitly that even if Christians must condemn sodomy morally, they cannot rightly punish it with legal coercion (ST, I-II, q. 96, a. 2).

In the Old Testament, sodomy is punished with death (Leviticus 20:13); and for that reason, sodomy had been a capital crime throughout much of the Christian world until the 19th century.  In the United States, sodomy was a crime in many states up to 2003, when the Supreme Court decision in Lawrence v. Texas struck down such laws as unconstitutional.

In contrast to the Old Testament, the New Testament does not recommend any legal coercive punishment for sodomy, although it does recommend that Christians condemn and punish it as practiced by members of the Christian churches.  Paul teaches the Christians in the Corinthian church that those in the Christian community guilty of sodomy and other sexual immorality must be punished by being banished from the community; but the Christians should not go to the courts in Corinth to seek judgments against these evil-doers (1 Corinthians 5-6).  Sodomites and other such sinners banished from the churches will be punished by God with eternal damnation in the afterlife.

Paul writes: "For what is it to me to judge those outside?  Is it not for you to judge those inside?  But God is to judge those outside" (1 Cor. 5:12-13).  Here is the New Testament scriptural basis for a Christian libertarianism, which enforces Christian morality among those within the voluntary association of the Christian churches, but which does not coercively enforce this morality through law.  So as long as sexual immorality like sodomy does not harm others, it can be permitted by human law, with the understanding that it will be judged by God in the afterlife.  (I have written about this Christian Lockean libertarianism here, here., and here.)  Aquinas seems to agree with this.

And yet even if sodomy is harmless, Aquinas indicates, it is worse than harmful sexual sins like rape, because sodomy is against the order of nature and thus an injury done to God as the Author of nature.  But this is a third strange feature of Aquinas's reply to the objection, because he must assume a sexual teleology of procreation that is too narrow to account for the full range of human sexual nature.

John Corvino has made this point well in his book What's Wrong with Homosexuality?  He very briefly explains this in a video here.  Here is a longer (1 hour) video with his famous lecture "What's Morally Wrong with Homosexuality?"



Homosexuality and other forms of sodomy, Aquinas claims, are all "unnatural," because they cannot result in procreation.  Just as eyes are for seeing, ears are for hearing, and feet are for walking, genitals are for procreating.  It is immoral to use one's genitals to achieve orgasmic pleasure without achieving procreation, because that violates the natural purpose of those organs.

Aquinas does recognize that nature is variable in that human body parts can have multiple uses, so that one can properly use a body part for something other than its primary natural purpose.  For example, one can choose to walk on one's hands.  But still, Aquinas observes, in walking on one's hands, "man's good is not much opposed by such inordinate use" (Summa Contra Gentiles, 3.122.9).  By contrast, it might seem that sodomy undermines the natural human good of procreation.  "Every emission of semen in such a way that generation cannot follow is contrary to the good of man" (SCG, 3.122.5).

There are three obvious problems with this reasoning, however.  The first problem is that sexual pleasure can serve some natural ends other than procreation.  Aquinas himself concedes this when he says that marriage is naturally directed not only to procreation but also to the conjugal bonding of the couple.  Heterosexual couples often have sex so that mutual pleasure strengthens their bond to one another, even when they don't want to procreate or cannot procreate; and to do this, they might engage in non-coital sexual acts such as fellatio, cunnilingus, or interfemoral sex. This being true, homosexual acts can promote this same natural end by reinforcing the intimate bonding of homosexual couples.  To deny this, one would have to argue either that conjugal bonding without procreation is not a natural human good or that gay men and lesbian women cannot achieve this good.

The second problem with the claim that sodomite sexual acts cannot achieve procreation is that couples can contribute to the procreation and rearing of children through adoption or in vitro fertilization, even though the adoptive couple has not produced the children through coital intercourse.  Consequently, gay and lesbian couples can achieve both of the natural ends of marriage--conjugal bonding and parental care.
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The third problem is that those who choose not to directly procreate themselves are not necessarily undermining the good of procreation.  After all, Aquinas himself was a celibate monk, and he claimed that those who chose celibacy might have a "natural temperament" for celibacy.  So refraining from procreating does not deny the natural good of procreation.

These obvious problems with the Thomistic natural law of sodomy as against nature have led some proponents of natural law to propose an alternative--the "new natural law."


THE NEW NATURAL LAW OF MARRIAGE AND SODOMY

Robert George of Princeton University is one of the leading proponents of the "new natural law."  He has indicated that the Thomistic natural law argument against sodomy as unnatural fails:  "It is often assumed in treatments of sexual ethics that the central argument from natural law theory against non-marital sexual acts is simply that such acts are unnatural, that is, contrary to the direction inscribed in the reproductive or procreative power.  This argument, often described as the 'perverted faculty argument,' is easily disposed of" (1999, 161).  He explains: "It is not clear, for example, that acting against the orientation of a biological power is necessarily wrong, nor is it clear that sodomitic and other non-marital acts are really contrary to that direction" (1999, 181, n. 2).

So, the Thomistic argument against sodomy is "easily disposed of," because it is not clear that non-procreative sex is necessarily wrong or really contrary to procreation.  As an alternative to this argument, George follows those like Germain Grisez and John Finnis in arguing that sodomy is wrong because it violates marriage as a "basic good" of human life.

Following Grisez's lead, Finnis in 1980 (in Natural Law and Natural Rights) proposed a list of seven "basic goods" or "basic values" that could be self-evidently known by intuition as the basic aspects of human well-being:  life, knowledge, play, aesthetic experience, sociability (friendship), practical reasonableness, and religion (Finnis 1980, 86-90).

This list resembles what Aquinas identifies as the "natural inclinations" of human nature or what I identify as the 20 "natural desires."  But unlike Aquinas and myself, Finnis is a Kantian rationalist who wants these basic goods to be known by pure reason alone without any grounding in the natural inclinations or desires of human nature.  For that reason, Finnis does not even like the idea of "natural law": he speaks of "the rather unhappy term 'natural law,'" because he wants a natural law without nature (1980, 374).  He wants to move from Thomistic naturalism to Kantian rationalism.  (I have criticized the Kantianism of the new natural law here.)

Notice that the list of seven basic goods does not include procreative sex or marriage.  Finnis indicated that sexual intercourse could fall under more than one of these goods: "as a human action, pursuit and realization of value, sexual intercourse may be play, and/or expression of love or friendship, and/or an effort to procreate" (1980, 86).  This suggests that non-procreative sex could satisfy one or more of the basic human goods.  But, then, years later, after the first edition of Natural Law and Natural Rights, Finnis added "marriage" to his list of "basic goods," so that he could criticize homosexuality as a violation of this basic good (Finnis 1996; 2011, 446-48).

According to the new natural lawyers, marriage as a basic good is a comprehensive "two-in-one-flesh" union of a male and female, for whom their coital penis-in-vagina sex renders them literally a single organic reproductive whole.  Consequently, the sexual union of a same-sex couple cannot ever be a "real marriage," because they can never experience that penis-in-vagina coital union for reproduction.

There are some obvious objections to this reasoning, which I have brought up in some previous posts hereherehere, and here.

The most common objection is that if the new natural lawyers were right, sterile heterosexual couples could not have a "real marriage," because they cannot reproduce.  The reply to this objection is that a heterosexual married couple do have a "real marriage," even if they are sterile, because their sexual acts can still be "of the reproductive type."  This is said to be analogous to a baseball team that never wins a game: this is still a baseball team because it is oriented to the goal of winning, even if it always loses.

The fallacy in this analogy, however, is that it does not distinguish between a goal that does not occur, although people are intentionally seeking it, and a goal that cannot occur, so that anyone aware of its impossibility cannot intentionally seek it.  A losing baseball team can continue trying to win, as long as winning is a possibility.  But if the team knows that winning is impossible, they cannot honestly strive to win.  Similarly, an infertile heterosexual couple who know that they are infertile cannot honestly try to procreate; and so, if they engage in sexual acts, this must be for some end other than reproduction.  Since reproduction is not their goal, it cannot be said that their sexual acts are "of the reproductive type."

Moreover, why should we say that coital union--penis-in-vagina--is the only human good that human beings can achieve through sex?  Why can't both heterosexual and homosexual couples express their love for one another and build their conjugal bond through mutual pleasure-giving without coital union?

Can't we also assume that most of those people who might adopt the new natural law argument for "real marriage" cannot consistently adhere to it?  They will appeal to the argument for the sake of condemning same-sex coupling.  But they won't accept the argument's claim that heterosexual couples who engage in contraception, masturbation, fellatio, cunnilingus, and interfemoral sex are engaging in sodomy.  Isn't that because they recognize that sexual activity serves human goods other than reproduction through coitus?

If the arguments for the Catholic Church's condemnation of sodomy are so weak that even most Catholics do not believe them, we must wonder whether there is some hidden motivation for the Church's position.  Recently, Pope Francis hinted at the answer: "Behind rigidity there is always something hidden, in many cases a double life."  I will pursue this thought in the next post.


REFERENCES

Corvino, John. 2013. What's Wrong with Homosexuality? Oxford: Oxford University Press.

Finnis, John. 1980. Natural Law and Natural Rights. Oxford: Oxford University Press.

Finnis, John. 1996. "Is Natural Law Theory Compatible with Limited Government?" In Robert George, ed., Natural Law, Liberalism, and Morality, 1-26. Oxford: Oxford University Press.

Finnis, John. 2011. Natural Law and Natural Rights. 2nd ed. Oxford: Oxford University Press.

George, Robert P. 1999. In Defense of Natural Law. Oxford: Oxford University Press.

Friday, October 05, 2007

Thomas Aquinas, Albert the Great, and Chimpanzee Natural Law

Quoting Ulpian, Thomas Aquinas declared that "natural right is that which nature has taught all animals." Developing this thought, his account of natural moral law as rooted in natural inclinations draws ideas from Aristotle's biology and from Albert the Great's elaboration of Aristotle's biology. Although there is no idea of Darwinian evolution in this biology, the reasoning about natural moral law as rooted in biological inclinations is similar to Darwin's explanation of the natural moral sense.

Against this Thomistic/Darwinian naturalism, much of modern moral philosophy has adopted a Kantian dualism that views morality as belonging to a transcendental realm of freedom beyond nature. Heidegger manifested this Kantian tradition in dismissing natural law as "biologism." Contemporary Heideggerian existentialists like Peter Lawler continue this tradition by insisting that the transcendental freedom of human beings make them all "aliens" in the universe. Hans Jonas identified this tradition of thought as essentially Gnostic, and he saw that Darwinian science refuted Gnostic dualism.

Under the influence of Aristotle's biology, Thomas concluded that, although only human beings act from "free" judgment, other animals act from "estimative" judgment about what will satisfy their desires. Thus all animals have a natural capacity for practical judgment that shows a certain "participation in prudence and reason" and a certain "likeness of moral good" (ST, I, q. 83, a. 1; q. 96, a. 1; I-II, q. 11, a. 2; q. 24, a. 4; q. 40, a. 3). The influence of this biological psychology on the Thomistic understanding of natural law is evident in the account of marriage in the Supplement to the Summa Theologica (q. 41, a. 1; q. 54, a. 3; q. 65, a. 1-3; q. 67, a. 1).

Thomas explains that something can be natural to human beings in different ways (ST, II-II, q. 46, a. 5; q. 51, a. 1; q. 63, a. 1). The natural dispositions can be considered either as generic (shared with other animals), or as specific (shared with other human beings), or as temperamental (the unique traits of human individuals). This trichotomy of the natural dispositions comes from Aristotle's theory of biological inheritance (Generation of Animals, 767b24-69b31).

So although human politics is uniquely human, we might still learn something about the natural roots of politics by looking at chimpanzee politics. This would be in the tradition of Thomas and Albert (Thomas's teacher at the University of Paris). Albert wrote a massive survey of the whole field of zoology, building upon Aristotle's biology. Albert's work in biological science was part of his larger project to vindicate the scientific study of natural causal laws through reason, observation, and experimentation. The end result of this was to establish science as a source of knowledge independent of theology. Albert stressed the uniqueness of human beings as the only animals endowed with the powers of intellect and speech. Yet he also observed that other animals "are not entirely without the power of thought," which shows that nature "progresses gradually through many intermediates." Some nonhuman animals do have "experiential knowledge" that manifests "a sort of prudence" and a "capacity for instruction," which thus shows that these animals have at least "a shadow of reason." Many animals have some "estimative power" by which, while deciding how they should act to satisfy their desires, they judge the intentions of other animals. The most intelligent of the nonhuman animals are simians--monkeys and apes--and pygmies, which belong to a species that is intermediate between simians and humans. The simians and pygmies, Albert says, show a "human likeness beyond all other animals," and "seem to have something like reason." (All my references are to the translation of Albert's zoological work published by Johns Hopkins University Press in 1999.)

Albert also observed that as political animals, human beings are like other social animals such as ants, bees, wasps, and cranes. Human society is unique, however, insofar as it can be based on formal laws or customary rules formualted deliberately by reason. Similarly, ethics in the strict sense is uniquely human to the extent tht it requires some rational deliberation in formulating a plan of how to live. Albert notes, however, that some other animals do exhibit "some natural inclination to a likeness of virtue," because their natural instincts and cognitive capacities incline them to act according to a "plan of life." On each of these points, Albert reiterates a biological teaching of Aristotle that is later adopted by Thomas.

Despite this, many of the most influential scholarly commentators on Thomas give little attention to the biological foundation of Thomas's understanding of natural law. John Finnis, for example, has led a recent revival of interest in Thomistic natural law, yet he largely ignores the importance of biological reasoning in Thomas's account. Finnis's natural law is actually "natural law without nature," because he accepts the Kantian dualism of natural law and moral freedom. In contrast to those like Finnis, I agree with Alasdair MacIntyre that the Aristotelian and Thomistic tradition of ethical naturalism is rooted in a biological understanding of human nature that has been confirmed by modern Darwinian biology. MacIntyre makes this point in his Dependent Rational Animals (1999).

Friday, March 10, 2017

Natural Law at Cambridge: Kantian Normativity, Catholic Antiliberalism, and Natural Human Law

On March 4th, I participated in a conference at the University of Cambridge.  I was in Cambridge for four days, where I had a room in Pembroke College, which was founded in 1347, making it the third oldest of the Cambridge colleges.  For me, this is a reminder that some of the oldest human institutions are universities.

One of the famous graduates of Pembroke was William Pitt the Younger, who in 1783, at the age of 24, became the youngest ever Prime Minister of Great Britain.  Other famous graduates include Roger Williams, the subject of some posts (here and here) on his defense of religious liberty and toleration.

                               Sculpture of William Pitt the Younger at Pembroke College

 
 


                                                                     Pembroke College

The conference was entitled "Law as a Guide to Justice: A Symposium on the Philosophical and Theological Foundations of Law and Justice in Honour of Amanda Perreau-Saussine Ezcurra (1971-2012)."

                                                 Amanda Perreau-Saussine de Ezcurra

Most of the participants were friends of Amanda.  Although I did not know her, I can tell by the testimony of her friends that she was a remarkable human being.  The last years of her life were shadowed by premature death--first, the death of her first husband, and then her own death 18 months later from cancer at the age of 41 in 2012.  At the time of her death, she was a Fellow of Queens College, and University Lecturer in Law, at the University of Cambridge.  Her primary academic intellectual interests were international law and the philosophy of law.  She was a devout Catholic who was an energetic and faithful member of the British Catholic community, particularly British Catholic professors.  Cambridge University has had some prominent Catholic philosophers--Elizabeth Anscombe, for example. 

There is some oddity here considering the history of Cambridge University as an integral part of the Anglican Communion initiated by Henry VIII's secession from the Catholic Church.  For a long time, degrees at Cambridge were granted only to those professing the Anglican faith, and every graduate had to declare belief in the Thirty-nine Articles.

Amanda wrote her thesis on John Finnis, another Catholic philosopher.  Although she admired his work in reviving interest in natural law among analytic philosophers through his book Natural Law and Natural Rights, she differed from him in her understanding of natural law.  One difference was that she thought Thomistic natural law could be rooted in some manner in the natural sociability of evolved human nature, while Finnis's Kantian interpretation of natural law rejected any such appeal to biological nature.  This explains why I was invited to present a paper at this conference: my argument for a Darwinian science of Thomistic natural law echoes some of her thinking.

It seemed fitting to me that I should be travelling to Cambridge to make my Darwinian arguments just one month after returning from my second trip to the Galapagos.  In 1827, after giving up his studies to become a medical doctor at the University of Edinburgh, Charles Darwin provoked the anger of his father who exploded: "You care for nothing but shooting, dogs, and rat-catching, and you will be a disgrace to yourself and all your family."  His father warned him that he needed some kind of respectable profession, and his father suggested that becoming an Anglican clergyman might be just what he needed.  So his father sent him to Cambridge for an Arts degree at Christ's College that would be the first step towards Holy Orders.  He arrived in Cambridge in January of 1828.  Although he had little interest in theology, Darwin did enjoy studying with the natural philosophers at Cambridge--particularly, John Henslow, professor of botany, and Adam Sedgwick, professor of geology.



                                     Darwin's College Room at Christ's College, Cambridge




                                                       
                                                                     Christ's College

But then, while away from school on a holiday in August of 1831, Darwin received a letter from Henslow telling him about Captain Robert FitzRoy, who was looking for someone who would be a companion for him and a naturalist on a voyage of the Beagle to do a coastal survey of South America for the British Navy.  That changed his life--instead of becoming a country clergyman, he would become a naturalist who would develop one of the biggest ideas of science.

Darwin's big idea has been elaborated in a tradition of evolutionary science that includes evolutionary explanations of morality and law that influenced some of Amanda's thinking about natural law.  In an unfinished book, entitled Law as a Guide to Justice: Old Questions for New Natural Lawyers, she wanted to show how the evolutionary biology of social animals--as set forth by people like Jane Goodall and Frans de Waal--could show the evolved natural sociability manifest in human nature that might support natural law.  In contrast to Kantian philosophers like Finnis, who claim that natural law depends on pure reason alone, she wanted to show that prior to human reason there are natural needs and inclinations that provide the grounds for natural law.  She also wanted to show how this natural law could be seen as implicit in statutory law, customary law, and divine law. 

Her untimely death kept her from developing her ideas in a finished book.  The purpose of the Cambridge conference was to have the participants pursue the questions she wanted to raise and perhaps carry out some of the work she had wanted to do in her book.  Previously, I have written a post with my comments on the conference papers and a link to the Dropbox file that has all the papers.

My biggest surprise is that apparently at Cambridge University they rely on lecturing rather than on open discussion among participants who have read something beforehand and are prepared to discuss what they have read.  I distributed weeks ahead of time an extensive set of comments on all the papers for the conference to all the participants.  Except for James Murphy and James Stoner, no one responded to my comments.  No one else circulated any comments on the papers.  And at the conference, I heard no evidence that anyone had read all the papers and was prepared to talk about the papers.  Moreover, the organizers of the conference indicated that they had intentionally made it impossible for anyone attending the conference to read the papers for the conference.  This is very different from the academic culture that I know at the University of Chicago, St. John's College, and the Liberty Fund, where one assumes that everyone participating in some discussion has read the readings for the gathering and is prepared to discuss them.

As I listened to the discussions at the conference, I thought about three main questions:

Must normative nature transcend empirical nature? 

Must the Catholic tradition of philosophy be anti-liberal?

Is human law derived from natural law?

The conference began with comments by Onora O'Neill, The Baroness O'Neill of Bengarve.  She is a prominent moral philosopher at Cambridge, perhaps best known for her books interpreting Kant.  She spoke about her conversations with Amanda, who was interested in Kant's understanding of judgment and how that might apply to legal interpretation.

O'Neill related that Amanda once asked a Cambridge professor about whether there was any consistent theme in the work of Alasdair MacIntyre, given the many shifting positions that he has taken over his life, and the answer was one word-- "Anti-liberalism!"

I noticed that many, maybe most, of the speakers at the conference were anti-liberal Catholics like MacIntyre.  I wondered about that.  Aren't they happy that liberal ideas like tolerance and religious liberty have prevailed at places like Cambridge, so that the tradition of Anglican intolerance has been overturned, and Catholics are free to profess their faith without persecution?  Don't Catholics like MacIntyre embrace such liberal ideas?  If so, then how can they be anti-liberal?

If they are anti-liberal Catholics, does that mean that they reject Vatican II and the Catholic Church's acceptance of religious liberty and the admission that the Church's tradition of persecuting heretics was wrong?  I assume not.

Anti-liberal Catholics like MacIntyre like to scorn what they see as the consumerism, materialism, and secularism of modern liberal culture and then insist that this cannot satisfy the human longing for transcendent spirituality expressed in religious communities.  But they do not consider how liberalism promotes the moral and religious liberty that allows people to pursue their spiritual quest in association with others who share their spiritual commitments.  Aren't British Catholics like Amanda and her friends better able to live their spiritual lives because of the triumph of liberal culture in Great Britain and elsewhere?

Anti-liberal Catholics like MacIntyre like to argue that Aristotle and Aquinas better understood the need for the moral and intellectual virtues for human flourishing than do modern liberal thinkers.  But they don't confront the argument of those like Deirdre McCloskey that modern liberalism promotes the bourgeois virtues, which include all the virtues recognized by Aristotle and Aquinas, and perhaps even the supernatural virtues of faith, hope, and charity.

The second introductory speech was by Tobias Schaffner, who presented the four central questions of Amanda's book as the questions around which this conference was organized.

(1) Is there a benign law-like ordering of the world and especially of human nature?  Part of Amanda's answer to this question was to point to the chimpanzee behavior studied by Goodall and de Waal as showing an animal nature that is both selfish and social that might be manifest in human nature as well.

(2) How do we derive exceptionless natural laws from our sociable nature?  Amanda's answer to this question was to appeal to Aquinas's account of the precepts of natural law as corresponding to the order of the natural inclinations, which suggests that there are vital needs or desires that constrain legal and political reasoning.  Whether this gives us "exceptionless" natural laws, as Amanda thought, is not so clear, it seems to me.  After all, Aquinas stressed the variability in the circumstances of human social life that require prudential judgments about what is best for particular individuals in particular situations.  Amanda's interest in human judgment about the indeterminate circumstances of life points to this problem.

(3) Can positive law, customary law, and divine law be our guide to natural law?  If Aquinas is correct about human laws being derived from natural law, then we should be able to see human laws implicitly pointing to natural law, even when human laws do not explicitly invoke the idea of natural law.  This made me want to reexamine what Aquinas says about this (ST, I-II, q. 95, a. 2).  For example, the U.S. Constitution never explicitly speaks of "natural law" (unlike the Declaration of Indepedence).  Does that mean that there is no natural law reasoning in the Constitution?  Or is it possible that natural law reasoning is implicitly required for interpreting the Constitution?  For instance, does "due process of law" in the Fifth Amendment imply some standard of natural justice?  Does the Ninth Amendment's reference to unenumerated rights "retained by the people" imply natural rights?

(4) Is there a benign structure and providential ordering sustaining the natural order and representing the foundation of natural law?  Does natural law depend on the theological belief in "a benign structure and providential ordering" of the world, which Christians like Amanda can embrace?  If natural law is really natural, and separated from divine law, as Aquinas says, does this mean that people without such religious belief can recognize natural law through their natural experience of the world and of their human nature?

The four sessions of this conference corresponded to this four questions.

John Cottingham (University of Reading) answered the first question by arguing that natural law does indeed depend on "a benign law-like ordering of the world and human nature" by God.  (I first met John in 2010 in Beijing at a conference on evolution and ethics where he made a similar argument against grounding ethics in evolutionary science.)  He distinguished between two senses of the word "nature."  According to the traditional premodern "theistic worldview," he explained, nature is a normative reality as created by God.  According to the modern "secularist worldview," nature is an empirical reality studied by science.  Nature is normative if one agrees with Cottingham that human beings by nature have a divinely implanted light of conscience by which they can see what is objectively right and wrong as determined by God.  Nature is only empirical, however, if one believes that human moral judgment is rooted in human desires, inclinations, or emotions, and thus the moral standard is purely subjective.  I would say that Cottingham's distinction here corresponds to Ed Wilson's distinction (in Consilience) between transcendentalist ethics and empiricist ethics, except that Wilson, in contrast to Cottingham, takes the side of empiricist ethics as rooted in the evolved moral sentiments of human nature, without any necessity for invoking God or divinely implanted conscience.

In my written comments on Cottingham's paper, I asked him whether he thought human beings could recognize and follow natural law even if they had no theistic religious beliefs.  In his oral presentation, he answered yes.

This made me wonder in what way Cottingham sees the "theistic worldview" as superior to the "secularist worldview."  He seemed to say that theism is intellectually superior to secularism in that theism can give a more intellectually satisfying explanation of natural law as derived from God's eternal law.  But then he left it unclear as to whether theism is also practically superior to secularism in that theism is better in practically motivating good conduct.  If that is what he is saying, then this is an empirically falsifiable prediction: we should be able to find evidence that moral conduct on average was better in premodern Europe as dominated by theistic belief than in modern Europe as dominated by secularism.  So, for example, it would seem that Cottingham would have to challenge the evidence for declining violence in history as surveyed by Steven Pinker and others, because declining violence would seem to show moral improvement in European history.  (I raised these questions in my written comments.)

Cottingham did not answer my questions in my written comments about whether he agreed with me that natural law can correct the divine law of the Bible--for instance, with respect to the violence and the support for slavery in the Bible.  Nor did he answer my questions about whether he agreed with Popes John Paul II and Benedict XVI in asking forgiveness for the faults of the Catholic Church in promoting religious violence.

In the Bible and in human history generally, we often see theistic believers inflicting violence on innocent people.  If natural law allows us to condemn this as wrong, doesn't that show that we need an empiricist ethics to correct the mistakes of a theistic ethics?

In the next session of the conference, Nicholas Lombardo (The Catholic University of America) and I spoke in favor of the idea that natural law can arise from our sociable nature (the second question).  Lombardo argued that the Mosaic law presupposes natural law.

I then summarized some of my arguments for Darwinian science as supporting Thomistic natural law. Patrick Riordan (Heythrop College, London) responded to my paper with three points. 

He questioned my methodology in arguing that I selectively picked out only those kinds of animal behavior that might look good to us (like monogamous mating and parental care of offspring) and passed over the brutal violence of animal behavior that we would see as bad. 

For his second point, he quoted MacIntyre's observation (in Dependent Rational Animals) about my "illuminating argument, designed to show how Aquinas's theses about the natural law are compatible with a biological understanding of human nature" (125); and he suggested that it was better to say that human biological nature was "compatible" with Thomistic natural law than to make the stronger claim that human biological nature "supports" Thomistic natural law.

For his final point, he indicated that I had failed to properly distinguish human "goods" and the "precepts" of natural law.

I didn't respond to the last point, because I didn't understand exactly what he was saying, which is probably my fault.

To the first point, I answered by indicating that I had not in fact ignored the harsher side of animal behavior.  For example, in the section of my paper on monogamy among birds, I noted that while monogamous birds might be socially monogamous, they were not always sexually monogamous or genetically monogamous, because they showed many "extra-pair copulations," and thus they did not satisfy Aquinas's standards for monogamy.

To the second point, I answered that Aquinas's heavy reliance on animal biology did seem to indicate that he saw this as "support" for natural law as rooted in biological nature.

MacIntyre's Dependent Rational Animals is a fascinating recognition by MacIntyre that Aristotelian and Thomistic moral philosophy depends upon biological nature.  In After Virtue, MacIntyre had argued that he wanted his defense of Aristotelian virtue ethics to be independent of Aristotle's "metaphysical biology," which was not rationally defensible.  But then after reading my Darwinian Natural Right, MacIntyre changed his mind; and in Dependent Rational Animals, he declared: "I now judge that I was in error in supposing an ethics independent of biology to be possible" (x).  He saw two reasons for this.  The first is that one must explain how human biology makes a moral life possible for human beings.  The second is that human biology explains the human vulnerability that makes us dependent on other human beings--particularly, the dependence of the young and the old.  Dependent Rational Animals lays out the biological basis of the moral life.

In the question period, James Bernard Murphy (Dartmouth College) made the argument that if our evolved natural desires were adaptive for the ancient environments of our evolutionary ancestors, they might not be adaptive for us today, and thus not normative for us.  So, for example, if our ancestors evolved a taste for sugar, that would not necessarily be good for us today, where the abundance of sugar allows us to ruin our health with too much sugar.  My response was to say that this illustrates the need for judgment in managing our desires.  Our desire for health can motivate us to see the need to moderate our  desire for sugar.  This was part of the general point that I made in my oral presentation that while the good is the desirable, the desirable is not necessarily whatever we happen to desire at any moment.  We often discover that we have been desiring something that is not truly desirable for us, and our practical judgment allows us to correct our mistake.  Moral judgment thus requires a combination of reason and desire, as Aristotle argued.

Cottingham also questioned me about whether Thomistic natural law requires a teleology that is denied by Darwinian biology.  I answered by pointing to the argument in my paper that Darwinian biology relies on immanent teleology, although it rejects cosmic teleology.  Cottingham and others at the conference argue that Thomistic natural law really does require a cosmic teleology--that is, the conception of the whole world as a benign order created by a providential God.

The next session of the conference was on Amanda's third question and entitled "Positive State Law as a Guide to (Natural) Justice."  Gerald Postema (University of North Carolina School of Law) spoke about his paper on Matthew Hale's "common-law naturalism."  The respondent was Judge James Crawford of the International Court of Justice.

Against the claim of some scholars that Hale was a legal positivist, Postema argued that Hale saw the common law as derived from natural law.  Postema did not respond to my questions in my written comments about whether Hale's endorsement of witchcraft trials and of the principle that husbands cannot be tried for raping their wives shows that Hale's judgment of natural law was distorted by his bias against women.  I can only assume that Postema believes that Hale's legal judgment in these cases of witchcraft and rape is irrelevant to any account and assessment of his jurisprudence.

Judge Crawford said that he was not a scholar of Hale's jurisprudence, and therefore he could not comment on Postema's interpretation of Hale.  Instead of that, he spoke about the failures of the "additive theory of international law" as proposed by legal positivists--the idea that international law can be explained as custom that has been recognized as law.  He questioned whether it as possible to rccognize custom as law without seeing the norm inherent in custom, suggesting that custom must manifest some natural standard of justice.  He also questioned how it was possible to do something for the first time and recognize this as custom.

The next speaker was James Stoner (Louisiana State University) summarizing his paper on how we can rightly distinguish the work of the legislator from the work of the judge in American constitutionalism by applying Aquinas's distinction between human law as a determination of natural law and human law as a deduction from natural law: the American legislator is concerned with determination, while the American judge is concerned with deduction.

In my written comments, I said that Stoner's paper is confusing, because he says that there is a "mixture of deduction and determination in legislative activity" (18), and he also says that "a mixture of deduction and determination appears as well in the reasoning of judges" (18).  In an email message to me, Stoner said that in claiming that determination ought to belong to the legislative power alone, he was not saying that determination alone ought to belong to the legislative power; and he said that the mixture for judges came from judges being bound by the determinations of others.

In his oral presentation, Stone did not explain what he meant in his paper by "the natural law moment in constitutionalism" (17).  But he seemed to say that even without any explicit reference to natural law in the Constitution, all law, including American constitutional law is either a determination of or a deduction from natural law.

What does this say, for example, about the antebellum debate over the constitutional status of slavery?  If slavery was contrary to natural law, does that mean that the constitutional protection for slavery should have been overturned by an appeal to natural law, because an unjust law is not really a law?  Or does natural law allow for some prudential compromise with slavery insofar as it is constitutionally protected? 

Nigel Simmonds (University of Cambridge) was the respondent for Stoner's paper.  But instead of responding to Stoner's paper, Simmonds briefly summarized the central idea of his book Law as a Moral Idea (2008).  In that book, he argued that "law is the set of conditions for jointly possible freedoms."  Although he presented this as a Kantian idea, it could just as easily be seen as a Lockean idea.  Oliver Wendell Holmes famously ridiculed the idea that law is "a brooding omnipresence in the sky."  But Simmonds argued that there is a sense in which this really is true.  Law is not just a heap of statutes and precedents, as Holmes seemed to claim, because law really is an ideal edifice, in that laws must be interpreted as a good faith attempt at doing justice, and adjudication is the working out of the law as an ideal edifice of justice.

The final session of the conference was on "When and Why are Positive Laws a Guide to Justice?"  James Murphy began by speaking about his paper on the modern idea of human rights as possibly a modern expression of the idea of natural law.  He spoke of two possible theological arguments and one possible philosophical argument justifying human rights.

The most commonly expressed theological argument, and the one that Murphy accepts as a Catholic, is the teaching of the Old Testament that all human beings are created in the image of God, which can be interpreted as declaring the equal moral dignity of human beings as endowed by their Creator with rights, which is affirmed in the famous language of the Declaration of Independence.

The second theological argument is attributed by Murphy to Nicholas Wolterstorff, a Calvinist who affirms total human depravity and thus denies that human beings deserve to be treated with equal dignity.  According to Wolterstorff, the moral dignity of human beings supporting human rights must be seen as an undeserved gift from God based on the New Testament teaching that all human beings will be redeemed on the Last Day for an eternal life in friendship with God.  This must mean that Wolterstorff is a Christian Universalist who denies the orthodox doctrine of eternal punishment in Hell.

The Universal Declaration of Human Rights of 1948 does not appeal to any such theological ideas, because such ideas will not be accepted by those many human beings who lack such religious beliefs.  There is, however, Murphy argues, a philosophical justification for human rights that does not require religious belief--"our genetic capacities for personhood" that are shared by all human beings as long as they retain the human genome. 

In fact, the Universal Declaration of the Human Genome and Human Rights, ratified by the United Nations in 1998, the 50th anniversary of the first Universal Declaration, affirms this: "The human genome underlies the fundamental unity of all members of the human family, as well as the recognition of their inherent dignity and diversity."

And yet, Murphy's respondent--Raffael Fasel (a graduate student at the University of Cambridge)--insisted that the only philosophical justification for human rights would have to based on normativity through and through without any reference to biological facts, because there will always be human beings with genetic disorders that deprive them of any potential for full personhood.  Fasel thus expressed the common assumption among many modern moral philosophers that the only proper grounding for ethics must be a transcendental normativity beyond the empirical nature of human life.  Oddly, Fasel did not identify any argument for the transcendental normativity of human rights, although he seemed to think there was such an argument somewhere.

I would argue that the Christian arguments for human rights based on Biblical theology fail, because the idea of the equal moral dignity of all human beings as endowed with equal human rights cannot be found in the Bible, in either the Old or the New Testaments.  For the Bible, human dignity is not equal and universal, it is hierarchical and comparative.  The Bible accepts the patriarchal household and social inequalities: wives are commanded to obey their husbands, and slaves are commanded to obey their masters.  Moreover, those who have been chosen by God as His people are superior to those He has rejected.

One Biblical verse that might be cited as supporting the equal dignity of all human beings as created in God's image is in Psalm 8: "For thou has made him a little lower than the angels, and hast crowned him with glory and honor."  But then, in the immediately following Psalm 9, the psalmist thanks God for destroying his enemies: "the enemy is wiped out--mere ruins forever--you have annihilated their cities, their memory has perished" (9:6).  Of course, the Bible is full of such bloody violence as God annihilates Israel's enemies in the most brutal ways.  Speaking to Moses, God commands the "curse of destruction" in which every living being in a town must be killed--men, women, and children (Deuteronomy 20:10-20)--although the young women who are still virgins should be kept alive so that they can be raped by the Hebrew men (Numbers 31).  Enemies can also be enslaved.  And, indeed, the Bible generally supports slavery.

Moreover, the violence commanded by God is directed not just to external enemies but also to Hebrews who displease God.  A long list of crimes--including children cursing their parents, homosexuality, and blasphemy--are to be punished with death.

Some parts of the New Testament seem supportive of universal humanitarianism.  But even so, Jesus is clear that when he returns for the Day of Judgment, he will separate the sheep from the goats, the sheep being rewarded with eternal life, and the goats punished with eternal fire (Matthew 25:31-46).  Amazingly, Wolterstorff glosses over this, implying that all human beings will be redeemed, and none will go to Hell eternally.  Moreover, the final book of the New Testament--Revelation--conjures up bloody apocalyptic battles at the end of history, which has inspired fanatical religious violence for thousands of years, including the recent terrorism of the Islamic State.

Doesn't this show us that we need natural law here to correct the Bible?  Isn't that what many Christians and Jews today have done in reinterpreting the Bible as teaching love, tolerance, and liberty--in other words, liberalism?

Fasel's objection to Murphy--that biological facts cannot provide the normativity necessary for true morality--is the same objection that Frances Cobbe made to Darwin's evolutionary account of the moral sense as rooted in human nature.  Cobbe insisted that human morality cannot be fully explained without some belief in "the Kantian doctrine of a Pure Reason, giving us transcendental knowledge of necessary truths," or in the idea that "the voice of Conscience is the voice of God."  She warned that Darwin's rejection of the Kantian view of morality as transcending natural human experience would destroy morality.  Similarly, contemporary philosophers like Richard Joyce assume that by definition moral judgments presuppose belief in a transcendent world of moral facts beyond the empirical world of natural facts.  If there are no such eternal moral facts, Joyce laments, then morality becomes fictional.

But as I have argued in a previous post, Joyce admits that a strong sense of transcendent moral duty can often support an authoritarian morality that leads to atrocities.  Fanatical religious believers have carried out their divinely commanded moral duty to kill infidels.  Many of the Nazi philosophers were neo-Kantians who believed in "eternal values" and in Nazism as fulfilling that eternal moral order.  The Nazi regime was organized around a strict communitarian morality of sacrificing selfish interests for the good of the community.

Impicitly, Joyce and other Kantians must ultimately subordinate their categorical imperatives of moral duty to the hypothetical imperatives of prudential calculation, because they recognize that we don't know whether any "must-be-doneness" really must be done unless we have judged that the outcome will be desirable for us!  If so, then they end up agreeing with me that "the good is the desirable," and that as I have argued in a previous post, moral judgments are hypothetical imperatives that give us reasons for acting only insofar as they serve what is truly desirable for us.

Even Kant implicitly conceded this.  In his Groundwork of the Metaphysics of Morals, he said that everyone desires to obey his categorical imperatives, because everyone--"even the most hardened scoundrel"--desires the "greater inner worth of his own person" [einen grosseren inneren Wert seiner Person] that comes only from obeying the moral law and thus becoming a "better person" (Ak 4.454).  In this way, Kant's categorical imperatives are always implicitly reduced to a hypothetical imperative.  If you desire to be a better person with a sense of self-worth, then you ought to obey my categorical imperatives.  This, then, rests on two kinds of empirical claims--that human beings most desire personal self-worth and that obeying Kant's categorical imperatives will achieve that desired end.  So, contrary to what Fasel assumed, our sense of transcendental normativity is ultimately grounded in natural human desires as shaped by human evolution.

The Universal Declaration on the Human Genome and Human Rights clearly indicates that the inherent dignity of humanity supporting human rights arises not from divine creation, nor from some cosmic normativity, but from  natural human evolution.  One product of human evolution is sympathy and the moral emotions of approval and disapproval.  The behavior of human rights activists shows that defending human rights depends not on appealing to theological or metaphysical normativity, but on appealing to sympathy and the moral emotions.  Groups like Amnesty International and Human Rights Watch tell stories or show us pictures of human cruelty.  The more disturbing and vivid the stories and the pictures of cruelty, the more likely we are to feel some identification and thus sympathy with the victims.  We then feel outrage against the perpetrators of such cruelty, and we want them to be stopped and perhaps punished. 

William Schulz is the former Executive Director of Amnesty International USA.  In his book In Our Best Interest: How Defending Human Rights Benefits Us All, he dismisses appeals to God or Nature or Reason as insufficient to sustain the morality of human rights.  Instead, he agrees with David Hume's, Adam Smith's,  and Charles Darwin's argument that morality depends on sympathy and the moral emotions that incline us to care for our fellow human beings.  He concludes: "Robert Frost once observed that poems begin with a lump in the throat, and I think human rights do too. . . . far better than by appeals to God or Nature, is to point to the capacity to identify with others, the capacity for human empathy or solidarity" (24).

The history of the expansion of human rights is therefore to be understood as what Hume and Darwin called "a progress of sentiments" as human beings have been persuaded to extend their sympathetic concern to ever wider circles of humanity.

As I have said in previous posts (here and here), what we see here is a reflective sentimentalism.  Moral judgment combines reason and emotion.  Pure reason by itself cannot move us to action without the motivational power of emotion or desire.  That emotional motivation is not irrational, because we can reflect on our emotions and judge them as warranted or not.  So, for example, we might feel outrage against a government that we believe has violated human rights by attacking innocent people, but if we discover that those people were not really innocent, then our outrage might be allayed.  Human rights activists don't make Kantian arguments about the normativity of human rights.  Rather, they make factual arguments about how people are being treated designed to elicit our sympathy for the victims of cruelty and our outrage against the perpetrators of cruelty.

The failure to recognize how human rights depend on reflective sentimentalism was one weakness in the paper of the last speaker at the conference--Nicholas McBride (University of Cambridge).  He identified the prohibition against torture as the classic example of an "exceptionless norm."  But as I indicated in my written comments on his paper, McBride did not explain the legal history or moral psychology of this modern rule against torture. 

The condemnation of legal torture as a violation of human rights--as "cruel and unusual punishment"--is a clear illustration of how sympathy and the moral emotions generally have sustained the modern movement to human rights.  Historian Lynn Hunt has explained this: "Torture ended because the traditional framework of pain and personhood fell apart, to be replaced, bit by bit, by a new framework, in which individuals owned their bodies, had rights to their separateness and to bodily inviolability and recognized in other people the same passions, sentiments, and sympathies as themselves" (Inventing Human Rights, 112).  Notice that the appeal here is to the natural facts of human nature and human experience without any appeal to theological or metaphysical normativity.

Friday, September 08, 2023

The Incoherence of Evolutionary Psychology's Kantian Transcendentalist Morality: Carlton Patrick and Peter DeScioli

In Consilience: The Unity of Knowledge (1998), Edward O. Wilson recognized that crucial for his unification of all knowledge was a biological account of ethics as rooted in evolved human nature.  He rightly noted that in doing this, he was following in the tradition of naturalistic ethics that stretches from Aristotle to David Hume to Adam Smith and to Charles Darwin.  He was also right to see this naturalistic tradition of ethics as being "empiricist" in contrast to the "transcendentalist" ethics of those thinkers like Immanuel Kant who look to a transcendent realm of moral freedom beyond the natural world of human inclinations and experience.  Since I agree with Wilson about this, it always seems strange to me that so many evolutionary psychologists have rejected Wilson's reasoning in favor of a Kantian transcendentalist view of morality, even though this contradicts any evolutionary explanation of morality as grounded in evolved human nature, which makes their account of morality incoherent.

For example, a few months ago, I wrote about Carlton Patrick's article--"Evolution Is the Source, and the Undoing, of Natural Law"--in which he assumed that John Finnis was correct in his Kantian interpretation of natural law as based on some "supernatural or metaphysical explanations" that transcend human nature.  Patrick then showed how evolutionary psychology explains that "when we talk about morality, we are not talking about a cosmic mandate but rather a set of species-wide psychological instincts that are a part of human nature."  But in thus refuting Finnis's Kantian distortion of natural law, Patrick ignored the fact that the natural law as understood by people like Thomas Aquinas and John Locke is rooted in human biological nature in a way that can be confirmed by evolutionary moral psychology.

I have also pointed out how Patrick and his coauthor Debra Lieberman have supported a Kantian rationalist view of ethics as transcending human biological nature, which denies the naturalist view of ethics defended by Locke, Darwin, and Westermarck.

Peter DeScioli is another example of an evolutionary psychologist who accepts Kant's transcendentalist morality, while still developing an evolutionary account of morality that contradicts that Kantian transcendentalism (DeScioli 2016; DeScioli and Kurzban 2009, 2013, 2018; Kurzban, DeScioli, and Fein 2012).  DeScioli repeatedly refers to Kant's Groundwork for the Metaphysics of Morals as showing how moral judgment must depend on the "categorical imperatives" of a transcendental morality (see, for example, DeScioli and Kurzban 2013, 479-480; and Kurzban et al. 2012).  He also endorses George Jackson Mivart's Kantian critique of Darwin's evolutionary moral psychology in The Descent of Man (DeScioli and Kurzban 2013, 479; Mivart 1893, 1973).  Mivart insisted on a Kantian separation between nature and morality.  Although the human body could be explained as a natural product of biological evolution, Mivart contended, the human soul was a supernatural product of divine creation.  And as an expression of the soul's transcendence of nature, human morality manifested a uniquely human freedom from natural causality.

In the Groundwork, Kant posits a radical dualism that separates reality into two metaphysical realms.  Judging what is the case belongs to the "phenomenal" realm of nature, but judging what ought to be belongs to the "noumenal" realm of freedom (Kant 1959, 3-5, 30, 44-45, 67-74, 80 [Academie edition, 387-89, 413, 426-28, 448-56, 460-62]).  The distinction in English between is and ought corresponds to Kant's distinction in German between sein and sollen.  For Kant, the natural world is governed by causal laws that can be understood by natural science; and in this world there can be no free will, because every event must be determined by a causal mechanism.  By contrast, in our moral experience, we praise and blame people in accordance with a moral law that transcends nature and is thus unknowable by natural science; and in this moral world we must assume free will, because moral judgment would be impossible unless we assumed that people were capable of freely choosing to obey or disobey the moral law.  As moral agents, we obey categorical imperatives of what ought to be, but this ought expresses a moral necessity that has no place in nature.  "When we have the course of nature alone in view, ought has no meaning whatsoever" (Kant 1965, 473).  As moral agents, human beings transcend the empirical realm of nature and enter a transcendent realm of freedom that belongs to them as rational beings not governed by the laws of nature.

Kant's separation of is and ought treats morality as an autonomous realm of experience governed by its own internal logic with no reference to anything in human nature such as natural desires and inclinations and the natural pursuit of happiness.  The human pursuit of happiness is not truly moral because it is governed by the empirical hypothetical imperatives of prudence--if you desire to be happy, then you must cultivate the moral and intellectual virtues--but not by the categorical imperatives of pure moral reason--you must obey the moral law without regard to your natural desires for happiness.

This puts Kant in opposition to the ethical naturalists like Aristotle, Aquinas, Locke, and Hume, who say that the human good is the desirable, that human morality is the pursuit of happiness, and that the natural moral law corresponds to the order of the natural desires of human nature.

When Darwin developed his evolutionary theory of morality, he adopted the ethical naturalist position rather than a Kantian dualism.  When he began his account of the moral sense in The Descent of Man, he quoted a passage from Kant's Critique of Practical Reason about how the word ought is one of the noblest traits of human beings.  But in the immediately following passage of Kant's book, Kant said this experience of the moral ought shows us "man as belonging to two worlds" (Kant 1956, 90).  Darwin, however, denied this Kantian dualism by indicating that he would approach morality "exclusively from the side of natural history," and he identified the power of the word ought as expressing instinctive moral emotion--"the deep feeling of right or duty" (2004, 120-21, 134, 136, 140, 147, 680).

DeScioli says that his evolutionary theory of morality is on the side of Kant rather than Darwin, because he accepts Kant's claim "that morality consists of 'categorical imperatives,' a set of actions that are morally wrong regardless of the goals these actions are intended to achieve," and DeScioli believes that laboratory research "has found that people often show Kantian moral thinking, focusing on specific actions rather than expected consequences" (DeScioli and Kurzban 2013, 479).   

DeScioli claims that the Kantian morality of categorical imperatives is shown clearly in how most people think about the Trolley Dilemma.  Imagine that you see a runaway trolley speeding down a track, and five people who have somehow become bound to the track will be killed.  You see that there is a switch that will turn the trolley onto a sidetrack and save the lives of the five people.  Unfortunately, however, there is one person bound to the sidetrack who will be killed if you throw the switch.  Should you throw the switch--killing one person but saving five?

Now imagine that you are on a footbridge over the tracks.  You see the runaway trolley and the five people who will be killed if the trolley is not stopped.  There is no switch to divert the trolley onto a sidetrack.  You could jump onto the track and try to stop it.  But let's say that you are such a small person that you're unlikely to stop it.  You notice, however, that there is a fat man standing near you, and if you push him onto the tracks, he will probably stop the trolley, but he will be killed.  Should you push the fat man--killing one person but saving five?

Oh sure, as I have indicated in my previous posts on the Trolley Dilemma, this looks like a silly cartoon.  But it does illustrate the kind of dilemma that some people have faced (perhaps in war), where killing one or a few people might save the lives of many. 

When people are asked about these two trolley scenarios, most will say that they would pull the switch but would not push the fat man.  This might seem strange since most are willing to kill one person to save five in the switch case but not in the footbridge case.  What's the difference between the two cases?

(Actually, in one realistic simulation of the switch case, 5 of 7 individuals froze in fear and refused to throw the switch.)

As DeScioli indicates, the most plausible explanation has been offered by John Mikhail (2011), who says that what we see here is an intuitive moral understanding of the Principle of Double Effect.  Thomas Aquinas stated this principle as part of his natural law jurisprudence.  To reconcile the prohibition of intentional killing with the right to kill in self-defense, Aquinas explained: "Nothing prevents one action having two effects, only one of which is intended, and the other of which is unintended. . . . Therefore, one's action in defending oneself can have two effects: saving one's life and slaying the aggressor.  And so such acts of self-defense, as one intends by them to preserve one's life, do not have the character of being unlawful, since it is natural for everything to keep itself in existence as far as possible" (Summa Theologica, II-II, q. 64, a. 7).  Mikhail sees a general principle here: "the principle holds that an otherwise prohibited action, such as battery or homicide, which has both good and bad effects may be permissible if the prohibited act itself is not directly intended, the good but not the bad effects are directly intended, the good effects outweigh the bad effects, and no morally preferable alternative is available" (Mikhail 2011, 148-49).

Mikhail applies this Principle of Double Effect to explain how most people distinguish the switch case from the footbridge case in the Trolley Dilemma.  If there is no morally preferable alternative, most people would pull the switch to intentionally save the five lives, while foreseeing but not directly intending the death of the one person on the sidetrack.  We know that the killing is not intended, because if the person on the sidetrack could escape and save his life, the bystander who pulled the switch would be pleased with this outcome.  By contrast, to push the fat man off the footbridge would be a directly intended killing; and we know that because if the fat man could run off the track to save his life, the intended outcome of the bystander who pushed him would not be achieved.

Mikhail sees this Principle of Double Effect as one manifestation of an "intuitive jurisprudence" rooted in "a common moral nature" and "a common sociobiological instinct" that illustrates the naturally evolved moral sense identified by Darwin in The Descent of Man (Mikhail 2011, 57, 148, 172; Darwin 2004, 132-38).

I don't see how this conforms to Kant's metaphysical morality.  Kant never speaks about the Principle of Double Effect.  And he clearly denies that moral judgment can be rooted in any instinctive moral sense of human nature, because pure moral reasoning belongs to a noumenal realm of pure moral reason that transcends the empirical reality of nature.

And yet, DeScioli insists that how people judge the trolley dilemma manifests the categorical imperatives of Kantian morality.  "Immanuel Kant would argue . . . that when humans face this dilemma, they should not kill one to save five because there is an inviolable moral rule against killing that cannot be broken regardless of the consequences" (Kurzban, DeScioli, and Fein 2012, 323).  In the footbridge version of the trolley dilemma, most people do seem to judge that in that situation, it is wrong to kill one person to save five people.  But in the switch version, most people judge that in that situation, it is right to kill one person to save five.   And so they do not believe in a Kantian categorical imperative that "there is an inviolable moral rule against killing" in all situations, as DeScioli asserts.  Rather, they believe that the rightness or wrongness of killing depends upon the situation.  So that in a situation where one must kill one person to save five people, and that killing is not directly intended, that killing is not wrong.  But in a situation where one directly intends to kill one person to save five people, that killing is wrong.  

Similarly, in a situation where killing an attacker is the only way to save one's life, that killing in self-defense is not wrong, because one is not directly intending the killing, as indicated by the fact that if the attacker were to retreat or surrender, one would not kill him.  A comparable moral principle of the law of just war is that combatants must not directly intend to target innocent people for attack, although innocent people might die as an unintended side-effect of directly attacking military targets.  Combatants may attack and kill enemy combatants who threaten them, but if those enemy combatants surrender, then they may not be killed.  

Here we see that Kant's categorical imperative (never kill) fails, because it does not allow for prudence in recognizing the variability in our moral judgments of right and wrong as applied to variable situations.

In a recent article in Evolution and Human Behavior, DeScioli seems to pull away from his earlier attempts to ground an evolutionary theory of morality and law in Kantian moral philosophy (De Scioli 2023).  He says nothing about Kant.  He argues that moral rules and laws evolved as a strategy for choosing sides in conflicts by impartial rules of action.  And this would seem to be grounded not in Kant's categorical imperatives but in the hypothetical imperatives of Thomistic and Lockean natural law as rooted in evolved human nature.  I will comment on that article in my next post.


REFERENCES

Darwin, Charles. 2004. The Descent of Man.  Penguin Classics.

DeScioli, Peter.  2016.  "The Side-Taking Hypothesis for Moral Judgment."  Current Opinion in Psychology 7:23-27.

DeScioli, Peter. 2023.  "On the Origin of Laws by Natural Selection."  Evolution and Human Behavior 44: 195-209.

DeScioli, Peter, and Robert Kurzban.  2009.  "Mysteries of Morality."  Cognition 112: 281-99.

DeScioli, Peter, and Robert Kurzban.  2013.  "A Solution to the Mysteries of Morality."  Psychological Bulletin 139: 477-496.

DeScioli, Peter, and Robert Kurzan.  2018.  "Morality Is for Choosing Sides."  In K. Gray and J. Graham, eds., Atlas of Moral Psychology, 177-185.  New York: Guildford Press.

Kant, Immanuel.  1956.  Critique of Practical Reason.  Trans. Lewis White Beck.  Indianapolis: Bobbs-Merrill.

Kant, Immanuel.  1959.  Foundations of the Metaphysics of Morals.  Trans. Lewis White Beck.  Indianapolis: Bobbs-Merrill.

Kant, Immanuel.  1965.  Critique of Pure Reason.  Trans. Norman Kemp SmithNew York: St. Martin's Press.

Kurzban, Robert, Peter DeScioli, and Daniel Fein.  2012.  "Hamilton vs. Kant: Pitting Adaptations for Altruism Against Adaptations for Moral Judgment."  Evolution and Human Nature 33: 323-333.

Mikhail, John.  2011.  Elements of Moral Cognition: Rawls' Linguistic Analogy and the Cognitive Science of Moral and Legal Judgment.  New York: Cambridge University Press.

Mivart, St. George Jackson. 1893.  "Evolution in Professor Huxley."  The Popular Science Monthly 44: 319-33.

Mivart, St. George Jackson.  1973.  "Darwin's Descent of Man."  In David Hull, ed., Darwin and His Critics, 354-84.  Chicago: University of Chicago Press.

Patrick, Carlton.  2023.  "Evolution Is the Source, and the Undoing, of Natural Law."  Evolution and Human Behavior 44: 175-183.

Wilson, Edward O.  1998.  Consilience: The Unity of Knowledge.  New York:  Knopf.