For in different men it is possible for there to be each of these attitudes with regard to the same thing, as has been said; but in the same man it is not possible even in this way; for he will at the same time hold a belief, eg that a man is just what is an animal (for this is what it was for it not to be possible for something not to be an animal), and that man is not just what is an animal (for let that be what it is for it to be possible).