Seneca

“ We feel a joy over those whom we love, even when separated from them, but such a joy is light and fleeting; the sight of a man, and his presence, and communion with him, afford something of living pleasure ”

“ XXXV. On the Friendship of Kindred Minds 1. When I urge you so strongly to your studies, it is my own interest which I am consulting; I want your friendship, and it cannot fall to my lot unless you proceed, as you have begun, with the task of developing yourself. For now, although you love me, you are not yet my friend. "But," you reply, "are these words of different meaning?" Nay, more, they are totally unlike in meaning. [1] A friend loves you, of course; but one who loves you is not in every case your friend. Friendship, accordingly, is always helpful, but love sometimes even does harm. ”

“ To be sure, I am already deriving some profit by imagining that we two shall be of one mind, and that whatever portion of my strength has yielded to age will return to me from your strength, although there is not so very much difference in our ages. ”