Book excerpt: Metaphysics is what Aristotle described as 'the First Philosophy' or 'first science,' a comprehensive inquiry into the ultimate nature of reality. As such, metaphysics consists of a systematic study of the more general categories of being and of the more general ways of relating entities. The Historical Dictionary of Metaphysics focuses on metaphysics in Western philosophy, the metaphysical tradition that developed under the influence of Greek philosophy, and especially Plato and Aristotle. It offers a comprehensive guide to the many facets of metaphysics through a chronology, an introductory essay, a bibliography, and over 300 cross-referenced dictionary entries on concepts, people, works, and technical terms. This volume is an invaluable resource for student and scholar alike.