Principia Ethica

Principia Ethica is recognized as the definitive starting point for twentieth-century ethical theory. The text is reprinted here with the previously unpublished preface Moore wrote for a planned but never completed second edition. Though unfinished it sets out clearly Moore''s second thoughts about his own work. The volume also includes two important pieces from his later ethical writings Free Will and The Conception of Intrinsic Value and a new introduction by Thomas Baldwin.