Michail Peramatzis presents a new interpretation of Aristotle's view of the priority relations between fundamental and derivative parts of reality, following the recent revival of interest in Aristotelian discussions of what priority consists in and how it relates existents. He explores how in Aristotle's view, in contradistinction with (e.g.) Quinean metaphysical views, questions of existence are not considered central. Rather, the crucial questions are: what types of existent are fundamental and what their grounding relation to derivative existents consists in. It is extremely important,...