Abstract

"Moral skepticism" is the thesis that no moral code or standard is or could be objectively justified. It constitutes as important a challenge to anti-skeptical moral theory as does skepticism about God to theistic philosophies. It expresses intuitive doubts, but it also entails the falsity of a variety of philosophical theories. It entails a denial of moral knowledge and truth, but one could reject it without holding that there is such knowledge or truth. An anti-skeptical theory could be a familiar "epistemic theory," but it could also be a "practical theory," according to which some moral code has an appropriate justification in practical reason