But suppose that the one remains what he was while the other gets better and becomes far superior in virtue: is the latter still to treat the former as a friend? Perhaps it is hardly possible that he should do so. We see this most plainly if the interval between the two be very considerable. Take, for instance, a boyish friendship: if one of the two remains a child in understanding, while the other has become a man in the fullest sense of the word, how can they any longer be friends, now that the things that will please them, and the sources of their joys and sorrows, are no longer the same? for not even in regard to each other’s character will their tastes agree, and without this, we found, people cannot be friends, since they cannot live together. (But this point has been already discussed.)