G. E. Moore on the Naturalistic Fallacy 1

G. E. Moore’s literary remains contain very little concerning ethics; but they include an unfinished draft (in manuscript) of what was intended to be a preface to the second edition of Principia Ethica. For various reasons it seems to me highly probable that this was written in 1920 or 1921; but in the end Moore abandoned the idea of a second edition, and in 1922 Principia was reprinted without any alterations, except for the correction of a few misprints, and grammatical mistakes and the inclusion of a prefatory note of seven lines.