This book provides a series of challenges to Jorge J. E. Gracia's views on metaphysics and categories made by realist philosophers in the Aristotelian and Thomistic traditions. Inclusion of Gracia's responses to his critics makes this book a useful companion to Gracia's Metaphysics and its Task: The Search for the Categorial Foundation of Knowledge.

Fleeing Cuba in 1961, Jorge J. E. Gracia arrived in the USA at the age of nineteen without family and unable to speak English. Ten years later he was assistant professor of philosophy at the State University of New York at Buffalo. Over the next 50 years Gracia published dozens of books and hundreds of articles, making major contributions to numerous areas of philosophy: Latin American philosophy, race and ethnicity, Medieval philosophy, philosophical historiography, metaphysics and ontology, and theory of interpretation. This book is a critical response to Gracia's work and a tribute to his legacy. It includes a comprehensive bibliography of Gracia's philosophical works.