The essays collected in this volume, appearing between the years 1939 and 1958, include all of the late Professor J. L. Austin's published papers, and in addition two unpublished papers, ‘The Meaning of a Word’ (1940) and ‘Unfair to Facts’ (1954), as well as an unscripted talk, ‘Performative Utterances’, given in the Third Programme of the B.B.C. in 1956. The editors, J. O. Urmson and G. J. Warnock, have performed a real service in making these papers available in one volume; for the cumulative impact of the method Austin pursued in doing philosophy, and the questions this method raises, can be felt and appreciated more fully when a considerable assemblage of illustrative papers is brought together. The debt Austin owes to the tradition to which G. E. Moore and Wittgenstein contributed is quite clear, and the divergences from them are equally clear. In reviewing the contents of the ten articles in this volume I shall try to single out what is unique about his contribution, in particular what features of his procedure, falling as it does under the general classification ‘linguistic analysis’, were so distinctive as to win for it the attention accorded to a new departure.