  This hylomorphic analysis of thinking is evidently a simple extension of the general model of hylomorphic change exploited by Aristotle in a host of similar contexts. Accordingly, Aristotle’s initial account of thinking will directly parallel his analysis of perception (De Anima iii 4, 429a13–18). That is, at least in schematic outline, Aristotle will offer the following approach. For any given thinker S and an arbitrary object of thought O: