  This approach to the nature of thinking has some promising features. Both in its own terms and in virtue of its fitting into a broader pattern of explanation, Aristotle’s hylomorphic analysis merits serious consideration. At the same time, one of its virtues may appear also as a vice. We noted in discussing Aristotle’s hylomorphic analysis of change generally that his account requires the existence of suitably disposed subjects of change. Only surfaces can be affected so as to be changed in color. An action, such as Socrates’ becoming unnerved by a glance of Alcibiades, cannot be made white; it is simply not the appropriate sort of subject. So, hylomorphic change requires at least the following two components: (i) something pre-existing to be the patient of the change, and (ii) that thing’s being categorially suited to be changed in the way specified.