 By “matter” I mean that which in itself is not called a substance nor a quantity nor anything else by which being is categorized. For it is something of which each of these things is predicated, whose being is different from each of its predicates (for the others are predicated of substance, and substance is predicated of matter). Therefore this last is in itself neither substance nor quantity nor anything else. Nor is it the denials of any of these; for even denials belong to things accidentally. (1029a20–26) 