In his book, Arnhart sketches twenty natural desires that are innate in human beings as shaped by Darwinian evolution. And he shows how the conservative commitments to traditional morality, family values, private property, and limited government satisfy the evolved natural desires of human beings.
He indicates how the social binds of marriage and family life defended by conservatives satisfy the natural human desires for sexual mating, sexual identity, and parental care. By contrast, those on the left tend to see marriage and family life as artificial cultural constructions that can be changed, or even abolished by social engineering directed to absolute sexual equality.
Arnhart presents his arguments for why conservatives are wrong to fear Darwinian biology and why conservatives should see Darwinian science as supporting their values. Darwinian evolution is open to a religious belief in God as the First Cause of the evolutionary laws of nature.