Complaints of this sort are wont to arise when, pleasure being the motive of the friendship with one person and profit with the other, they do not both get what they want. For the friendship, being based on these motives, is dissolved whenever they fail to obtain that for the sake of which they made friends; for it was not the other’s self that each loved, but only something which he had, and which is not apt to endure; for which reason these friendships also are not apt to endure. But friendship based on character, being pure, is likely to last, as we said.