Aristotle's Four Causes of Action

Aristotle's typical procedure is to identify four causes of natural changes. Intentional action, a natural change, has standardly been treated as an exception: most think that Aristotle has the standard causalist account, according to which an intentional action is a bodily movement efficiently caused by an attitude of the appropriate sort. I show that action is not an exception to Aristotle's typical procedure: he has the resources to specify four causes of action, and thus to articulate a powerful theory of action unlike any other on offer.