Aristotle's treatise "De Memoria" is close to theories of memory in the British empiricist tradition. Because of its richness of detail it serves as a good introduction to the topic. This book, first published in 1972, provides a translation of the text which is more faithful to the original than previous ones, together with extensive introduction, summaries and commentary. It has never been superseded. For this second edition of the book, Richard Sorabji has provided a substantial new introduction, taking account of scholarly debate over the intervening thirty years, particularly on the role of mental images in the imagination.