Aristotle's discussions of involuntary actions in the ethics: A question of methods

The article examines Aristotle's two attempts to explain the phenomena of voluntary and involuntary actions: Eudemian Ethics (EE) II 6-9 and Nicomachean Ethics (EN) III 1. Though there are notorious coincidences, there are also substantial differences between them in the characterization of involuntary actions, in the general argumentative strategy, and in the definition of voluntary actions. The paper endeavors to account for these material differences on the basis of the general methodological strategy used by Aristotle in each case.