Abstract

MetaphysicsZ.ll has in recent years received considerable attention, because of its importance for the exposition of Aristotle's psychology, which for some time now has been an immensely popular topic among Aristotelian scholars. Z.ll has proved contentious, however, especially over its statement of Aristotle's criticism of Socrates the Younger, who was wont to make a certain ‘comparison’ in the case of animals. Virtually nothing is known about this Socrates the Younger, nor is it known exactly what ‘comparison’ he made with animals. But, as most interpreters suppose from the context of Z. 11, his comparison certainly had much in common with that made by ‘some', who argue that natural objects, like man, are comparable to geometrical figures, like the circle, with respect to their relationship to their matter. Just as the physical matter of circles, such as bronze, stone, and the like, are no part of the essence of the circle, so too the physical matter of man—flesh and bones—is no part of the essence of man. This comparison may hold true, even if, unlike circles, man is in fact found only in a single sort of matter, because the case of man may be like the counterfactual case in which all circles happen to be made of bronze. The bronze would still not belong to the essence of the circle; it would just be difficult psychologically to separate circularity from bronze.