Plotinos: Complete Works, v. 1 In Chronological Order,...

14. Let us now examine if matter be privation, or if privation be an attribute of matter. If you insist that privation and matter are though logically distinct, substantially one and the same thing, you will have to explain the nature of these two things, for instance, defining matter without defining privation, and conversely. Either, neither of these two things implies the other, or they imply each other reciprocally, or only one of them implies the other. If each of them can be defined separately, and if neither of them imply the other, both will form two distinct things, and matter will be different from privation, though privation be an accident of matter. But neither of the two must even potentially be present in the definition of the other. Is their mutual relation the same as that of a stub nose, and the man with the stub nose (as suggested by Aristotle)?308 Then each of these is double, and there are two things. Is their relation that between fire and heat? Heat is in fire, but fire is not necessarily contained in heat; thus matter, having privation (as a quality), as fire has heat (as a quality), privation will be a form of matter, and has a substrate different from itself, which is matter.309 Not in this sense, therefore, is there a unity (between them).