  One might suppose that the obvious alternative is to think of moral reality as embedded in the natural world as opposed to the supernatural. However, for reasons that we will turn to shortly, many philosophers have strongly resisted this option and have proposed that moral knowledge has its basis in non-natural aspects of the world that can be apprehended only through a faculty of moral intuition or reason that is independent of sense experience. Moral reality, so conceived, is posited as sui generis, reducible to neither the natural nor the supernatural and requiring a mode of apprehension comparable to mathematical intuition.