Bernard Williams is one of the most influential figures in recent ethical theory, where he has set a considerable part of the current agenda. In this collection, a distinguished international team of philosophers who have been stimulated by Williams' work give new responses to it. The topics covered include equality, consistency, comparisons between science and ethics, integrity, moral reasons, the moral system, and moral knowledge. Williams himself then provides a substantial reply, which in turn shows both the current directions of his own thought and also his present view of his earlier work (such as that on utilitarianism).