Right or wrong in such actions as adultery does not depend on our committing them with the right person, at the right time or in the right manner; on the contrary it is sinful to do anything of the kind at all.... [Nicomachean Ethics, Bk VII, chapter 6, trans. by J.E.C. Weldon] Unlike Aristotle--or Biblical morality or the natural law tradition--Darwinism does not supply a basis for categorically