"ACCORDING to the Philosopher (Ethic. viii, 2, 3) not every love has the character of friendship, but that love which is together with benevolence, when, to wit, we love someone so as to wish good to him. If, however, we do not wish good to what we love, but wish its good for ourselves. . . it is love not of friendship, but of a kind of concupiscence. . . . Yet neither does well-wishing suffice for friendship, for a certain mutual love is requisite, since friendship is between friend and friend: and this well-wishing is founded on some kind of communication."
~St. Thomas Aquinas: Summa Theologica, II-II, Q. 23, A. 1.
Read more: Charity, considered in itself
