Richard Posner in "How Judges Think" (quoted by Jac).
TANGENTIALLY RELATED: Christopher Hitchens and Dr. William Lane Craig debate the question “Does God Exist?” and Craig gives 5 arguments for the existence of God, the third one being:
3. The Moral Argument; If God does not exist, then objective moral values do not exist. Rape isn’t just culturally unacceptable, it’s actually wrong.