The author argues that Darwinian biology supports an Aristotelian view of ethics as rooted in human nature. Defending a conception of “Darwinian natural right” based on the claim that the good is the desirable, the author documents at least twenty natural desires that are universal to all human societies because they are based in human biology. Satisfying these natural desires is an objective standard for judging social practice as either fulfilling or frustrating human nature. He argues as well that the natural moral sense does not require religious belief, although such belief can sometimes reinforce the dictates of nature. Highly recommended.