The latest volume in the Studies in Philosophy and the History of Philosophy series contains thirteen essays by Lawrence Dewan on metaphysics, the vision of reality from the viewpoint of being. While they take the form of interpretations of the thought of Thomas Aquinas, they are meant as a contribution to perennial philosophy, truth that transcends particular cultures and eras. Written over a period of 25 years, the essays regularly offer alternative views on extremely fundamental issues. among the various items in the ontological analysis. The most prominent Thomistic metaphysicians in the twentieth century laid great stress on the role of the act of being. Dewan's essays present what is essentially the same picture, but in a way that emphasizes the continuity between Christian philosophers and their predecessors in ancient Greece.