This paper examines Aristotle’s analysis of unenacted capacities to show the role they play in his discovery of the concept of actuality. I first argue that Aristotle begins Metaphysics IX by focusing on active and passive capacities, after which I discuss Aristotle’s confrontation with the Megarians, the philosophers who maintain that a capacity is present only insofar as it is being enacted. Using Heidegger’s interpretation as a guide, I show that Aristotle’s rejection of the Megarian position leads him to propose (...) that presence cannot be confined to activity. I also argue that this provides the context for Aristotle to realize that the relation between capacity and activity can be generalized as the relation between two ways of being. (shrink)

There are several passages in the Metaphysics where Aristotle explains ontological priority in terms of ontological dependence, but there are others where he seems to adopt a teleological conception of ontological priority. It is sometimes maintained that the latter priority too must be construed in terms of the former, or that the priorities in question are not both endorsed (or simultaneously endorsed) by Aristotle. The goal of this paper is to show otherwise; I argue that what is at issue are (...) two distinct priorities that Aristotle simultaneously endorses. (shrink)

On the standard interpretation of Metaphysics IX, Aristotle proceeds from the original sense of δύναμις and ἐνέργεια to an ontological conception of these terms. This should raise the question of what is not ontological about the former and what is ontological about the latter. To address these questions I discuss the commentaries by Heidegger and Menn, which alone come close to addressing these issues. But their readings cannot neatly distinguish between the two senses of δύναμις and ἐνέργεια that we find (...) in the Aristotelian text, thus compelling us to seek a better way of clarifying the standard interpretation, which I argue can be more precisely understood in the following way: δύναμις and ἐνέργεια in their customary meaning cannot be considered ontological in the sense that they have a particular locus among the categories, which is what sets them apart from their newer, ontological meaning. I conclude therefore that the text of Metaphysics IX can be understood as proceeding from an intracategorial conception of δύναμις and ἐνέργεια toward a transcategorial conception of these terms. (shrink)

This paper offers an interpretation of Aristotle’s concepts of dynamis and energeia (commonly translated as potentiality and actuality), and of the thematic progression of Metaphysics IX. I first raise the question of where motion fits in Aristotle’s categories and argue that the locus of motion in the system of categories are the categories of doing and suffering, in which case dynamis and energeia in respect of motion can also be understood as the dynamis and energeia of doing and suffering. Next, (...) I argue that the analogy that Aristotle draws in IX.6 is an analogy between the dynamis and energeia of doing and suffering and the dynamis and energeia of substance. Finally, I try to show that it is this analogy between the kinetic and non-kinetic variants of dynamis and energeia—and not the distinction between end-inclusive and end-exclusive activities—that provides the key to understanding the structure of Metaphysics IX. (shrink)