By offering the first systematic analysis of the nature of the discipline, Metaphysics and Its Task answers why metaphysics always recovers from the attacks it has been subjected to throughout its history. This is done by examining its object, method, aim, and the kind of propositions of which it is composed. In addition to presenting a new conception of metaphysics and an explanation of the resilience of the discipline, the book offers a novel understanding of the nature and ontological status of categories, an analysis of the nature of reductionism and its role in philosophy, and a discussion and criticism of the main views concerning the nature of metaphysics developed in the history of philosophy. In this nonsectarian book Gracia uses sources ranging from Plato and Aquinas, to Collingwood and Strawson. Written in nontechnical language, it is accompanied by detailed bibliographical references.