Is toleration a requirement of morality or a dictate of prudence? What limits are there to toleration? What is required of us if we are to promote a truly tolerant society? These themes--the grounds, limits, and requirements of toleration--are central to this book, which presents the W.B. Morrell Memorial Lectures on Toleration, given in 1986 at the University of York. Covering a wide range of practical and theoretical issues, the contributors--including F.A. Hayek, Maurice Cranston, and Karl Popper--consider the philosophical difficulties inherent in the concept as well as the practical problems of implementing a policy of toleration. Although the contributors differ in their conclusions about the grounds of toleration, they all share a belief in the importance of the concept both historically and in modern society.