The analysis of knowing naturally ends with the analysis of truth. Since the analysis of truth for Aristotle involves relating our knowing to the real, or what is, some further remarks on his conception of the real are required—not a retelling of the whole story of being, but an examination of how it operates in the processes of knowing. Finally, we face the heated question of the sense in which Aristotle is an “essentialist” —long a term of praise, long thereafter a term of reproach, and now apparently in a pendular swing towards being praiseworthy again. How far is essentialism a technical doctrine, how far a faith about the nature of the world, how far a postulate? These are the problems of this chapter.