It is possible, then, to give something to the wise man, although all things belong to the wise man. Similarly, though we declare that friends have all things in common, it is nevertheless possible to give something to a friend: for I have not everything in common with a friend in the same manner as with a partner, where one part belongs to him, and another to me, but rather as a father and a mother possess their children in common when they have two, not each parent possessing one child, but each possessing both. First of all I will prove that any chance would-be partner of mine has nothing in common with me: and why? Because this community of goods can only exist between wise men, who are alone capable of friendship: other men can neither be friends nor partners one to another. In the next place, things may be owned in common in various ways. The knights’ seats in the theatre belong to all the Roman knights; yet of these the seat which I occupy becomes my own, and if I yield it up to anyone, although I only yield him a thing which we own in common, still I appear to have given him something. Some things belong to certain persons under particular conditions.