Book excerpt: In this timeless and profound inquiry, Aristotle presents a view of the psyche that avoids the simplifications both of the materialists and those who believe in the soul as something quite distinct from body. On the Soul also includes Aristotle's idiosyncratic and influential account of light and colors. On Memory and Recollection continues the investigation of some of the topics introduced in On the Soul. Sachs's fresh and jargon-free approach to the translation of Aristotle, his lively and insightful introduction, and his notes and glossaries, all bring out the continuing relevance of Aristotle's thought to biological and philosophical questions.