A substancia e o ser dos itens n o-substanciais em Z1

Aristotle’s discussion of substance at Metaphysics Z1 begins with an issue about the ontological status of some non-substantial items. This issue is usually understood as designed to establish substance as first being. In this paper, I argue for an alternative interpretation of Aristotle’s move. The issue concerning the ontological status of some non-substantial items does not aim at establishing substance as first being, but to direct the investigation to the reason why substance is taken as first being.