What does it mean to follow a rule? Saul Kripke sees this question as the central problem of Wittgenstein's later philosophy. According to Kripke, Wittgenstein presents a skeptical paradox that seems to show that the concept of "following a rule" is not understandable. After discussing likely responses Wittgenstein might have to possible solutions to this problem, Kripke presents Wittgenstein's own "skeptical" solution - as he, Kripke, understands it. In a detailed postscript, Kripke moves from the problem of private language to a surprising discussion of Wittgenstein's views on the problem of other minds.