We may dismiss, then, the justice which coincides with complete virtue and the corresponding injustice, the former being the exercise of complete virtue towards others, the latter of complete vice.

It is easy also to see how we are to define that which is just and that which is unjust in their corresponding senses [according to law and contrary to law]. For the great bulk, we may say, of the acts which are according to law are the acts which the law commands with a view to complete virtue; for the law orders us to display all the virtues and none of the vices in our lives.

But the acts which tend to produce complete virtue are those, of the acts according to law which are prescribed with reference to the education of a man as a citizen. As for the education of the individual as such, which tends to make him simply a good man, we may reserve the question whether it belongs to the science of the state or not; for it is possible that to be a good man is not the same as to be a good citizen of any state whatever. 99