Seite - 1565 - in The Complete Aristotle

mean nothing different from ‘being a man’; so that ‘being a man’ will be ‘not being a man’; for they will be one. For being one means this-being related as ‘raiment’ and ‘dress’ are, if their definition is one. And if ‘being a man’ and ‘being a not-man’ are to be one, they must mean one thing. But it was shown earlier’ that they mean different things.-Therefore, if it is true to say of anything that it is a man, it must be a two-footed animal (for this was what ‘man’ meant); and if this is necessary, it is impossible that the same thing should not at that time be a two-footed animal; for this is what ‘being necessary’ means-that it is impossible for the thing not to be. It is, then, impossible that it should be at the same time true to say the same thing is a man and is not a man. The same account holds good with regard to ‘not being a man’, for ‘being a man’ and ‘being a not-man’ mean different things, since even ‘being white’ and ‘being a man’ are different; for the former terms are much more different so that they must a fortiori mean different things. And if any one says that ‘white’ means one and the same thing as ‘man’, again we shall say the same as what was said before, that it would follow that all things are one, and not only opposites. But if this is impossible, then what we have maintained will follow, if our opponent will only answer our question. And if, when one asks the question simply, he adds the contradictories, he is not answering the question. For there is nothing to prevent the same thing from being both a man and white and countless other things: but still, if one asks whether it is or is not true to say that this is a man, our opponent must give an answer which means one thing, and not add that ‘it is also white and large’. For, besides other reasons, it is impossible to enumerate its accidental attributes, which are infinite in number; let him, then, enumerate either all or none. Similarly, therefore, even if the same thing is a thousand times a man and a not-man, he must not, in answering the question whether this is a man, add that it is also at the same time a not-man, unless he is bound to add also all the other accidents, all that the subject is or is not; and if he does this, he is not observing the rules of argument. And in general those who say this do away with substance and essence. For they must say that all attributes are accidents, and that there is no such thing as ‘being essentially a man’ or ‘an animal’. For if there is to be any such thing as ‘being essentially a man’ this will not be ‘being a not-man’ or ‘not being a man’ (yet these are negations of it); for there was one thing which it meant, and this was the substance of something. And denoting the substance of a thing means that the essence of the thing is nothing else. But if its being essentially a man is to be the same as either being essentially a not-man or essentially not being a man, then its essence will be something else. Therefore 1565