Abstract

The definition of soul in De Anima ii 1 is usually thought to be inadequate, since Aristotle ends the chapter by saying the account has been sketched in outline and begins ii 2 by explaining the proper way to define. I argue instead that this is Aristotle’s considered definition of soul. I do so by examining the transitional material between ii 1 and ii 2, explaining the meaning of ‘in outline’ and how the examples of proper definitions that show the cause—squaring in De Anima and thunder from Posterior Analytics—correspond to the definition of soul given in ii 1.