In the friendships hitherto spoken of the persons are equal, for they do the same and wish the same for each other, or else exchange equal quantities of different things, as pleasure for profit. (We have already explained that the latter less deserve the name of friendship, and are less lasting than the former kind. We may even say that, being at once both like it and unlike it, they seem both to be and not to be friendships. On the ground of their resemblance to the friendship that is based on virtue, they seem to be friendships; for one involves pleasure, the other profit, both of which belong to true friendship; but, again, inasmuch as it is beyond calumny and is lasting, while they are liable to rapid change and different in many other respects, they seem not to be friendships because of their unlikeness to it.)
But, besides these, there is another kind of friendship, in which the persons are unequal, as that of a father for a son, and generally of an elder for a younger person, or of a man for a woman, or of a ruler of any kind for a subject.