their neighbour. 1130aAnd for this reason that saying of Bias is thought to be a good one,
“Rule will show what a man is;”
for he who bears Rule is necessarily in contact with others, i.e. in a community. And for this same reason Justice alone of all the Virtues is thought to be a good to others, because it has immediate relation to some other person, inasmuch as the Just man does what is advantageous to another, either to his ruler or fellow-subject. Now he is the basest of men who practises vice not only in his own person but towards his friends also; but he the best who practises virtue not merely in his own person but towards his neighbour, for this is a matter of some difficulty.1
However, Justice in this sense is not a part of Virtue but is co-extensive with Virtue; nor is the Injustice which answers to it a part of Vice but co-extensive with Vice. Now wherein Justice in this sense differs from Virtue appears from what has been said: it is the same really, but the point of view is not the same: in so far as it has respect to one's neighbour it is Justice, in so far as it is such and such a moral state it is simply Virtue.