Friendship with good and bad, with wise and foolish, with high and low, is equally beneficial, whether to yourself or to the other. What does it matter if another be benefited by your friendship, since you would like to be benefited by someone else's friendship? He is wise who treats an acquaintance as a friend, and he is foolish who treats a friend as an acquaintance, and he is impossible who treats friends and acquaintances as strangers; you cannot help him.