A completely revised and updated second edition of Modern Moral Philosophy , first published in 1970. During the twentieth-century many philosophers of the analytical tradition have debated the meaning of moral judgements. This book analyzes the principle moves and countermoves in that debate. To the first five chapters of the original edition Dr Hudson has added three new chapters on The Derivation of Ought from Is , Further Forms of Descriptivism and Anti-Utilitarianism and the Two-level Theory , taking into account the recent work of Gewirth, Geach, Philippa Foot, Hampshire, Williams, MacIntyre, Hare and other contemporary philosophers.