  Moral skepticism comes in two corresponding varieties. Pyrrhonian skeptics about moral knowledge refuse to admit that some people sometimes know that some substantive moral belief is true. They doubt that moral knowledge is possible. Still, they do not go on to make the opposite claim that moral knowledge is impossible. They doubt that, too. Their doubts are so extreme that they do not make any claim one way or the other about the actuality or possibility of moral knowledge. Parallel views can be adopted regarding justified moral belief. Pyrrhonian skeptics about justified moral belief suspend or withhold belief about the actuality or possibility of any justified moral belief.