The Ontology of the ‘Now’ in Aristotle

I argue in this paper that Aristotle’s theory of time engages him in a constructive dialogue with the rest of his metaphysics, giving him the opportunity to develop novel metaphysical types of entity.  In particular, I concentrate on the type of entity the now is in his theory and try to bring out the ontological makeup of the now, while identifying what about it is novel for Aristotle’s metaphysics.