Abstract

In Metaphysics Z 13 Aristotle argues that no universal can be substance. Prima facie, this appears to rule out the possibility that any universal can be substance, species as well as genera. Nevertheless, many commentators have denied that this chapter intends to rule out the possibility that any universal can be substantial. Aristotle, it is thought, cannot wish to deny that any universal can be substance because he believes that some universals are substances, viz. species