In Metaphysical Naturalism is Not Great: How M.N. Decays Society's Values, the idea that the philosophy behind evolution provides a better source of morality than religion is pondered; for it is essentially a response to Christopher Hitchens' book, god is no Great: How Religion Poisons Everything. Thus, the idea that the militant atheists have that religious morality is immoral and that the morality that evolution offers is a lot more benign is decomposed. That author talks about how evolution obliterates any basis for morality, the meaning of life, or the sanctity of life, and how this evolutionary destruction of values authorizes people to do evil.