Abstract

According to robust moral realism, there exist objective, non-natural moral facts. Moral facts of this sort do not fit easily into the world as illuminated by natural science. Further, if such facts exist at all, it is hard to see how we could know of their existence by any familiar means. Yet robust realists are not moral skeptics; they believe that we do know the moral facts. Thus robust moral realism comes with a number of hard-to-defend ontological and epistemological commitments. Recently, Sharon Street has claimed, in light of these commitments, that robust moral realism requires a kind of faith and “has become a strange form of religion.” I believe that Street is right. I argue at some length that robust moral realism does require faith, and is a religion. However, I further argue that it is an excellent religion. I argue that it has three principal advantages: it is avoids wishful thinking, is guaranteed not to contradict the results of natural science, and is profoundly simple in its ontological commitments. Further, robust moral realism may be rationally defensible on evidentialist grounds. Consequently, even if the standard arguments for traditional religions are not compelling, there might still be compelling arguments for robust moral realism.