Although social scientists have been devoted to discovering specific realities of social life, many theorists devoted to critical judgment have turned to philosophy in search of universal grounds of truth and reality. They have, however, worried about the problem of relativism. Although Wittgenstein has often been characterized as a relativist, Cora Diamond, inspired by G. E. M Anscombe, argues that his work, despite internal tensions, provides rational grounds for external criticism of social practices. Her argument and her critique of the work of Peter Winch and Ilham Dilman are, however, neither adequately supported by Wittgenstein’s texts nor sufficiently developed on their own terms.