Kitap 8
3
If then all the virtues are forms of knowledge, it would be possible to use even justice as injustice—in that case a man will be behaving unjustly by doing unjust acts as a result of justice, as when one makes ignorant mistakes from knowledge; but if this is impossible, it is clear that the virtues cannot be branches of knowledge. And also if it is not possible from knowledge to be ignorant, but only to make mistakes and do the same things as one does from ignorance, a man will assuredly never act from justice in the same way as he will act from injustice. But since wisdom is knowledge and a form of truth, wisdom also will produce the same effect as knowledge, that is, it would be possible from wisdom to act unwisely and to make the same mistakes as the unwise man does; but if the use of anything qua itself were single,As in 1 above it was shown not to be. when so acting men would be acting wisely.
4
In the case of the other forms of knowledge, therefore, another higher form causes their diversion; but what knowledge causes the diversion of the actually highest of all? Obviously there is no longer any knowledge or any mind to do it. But moreover goodness does not cause it either; for wisdom makes use of goodness, since the goodness of the ruling part uses that of the ruled.