“To have a friend: to keep him. To follow him with your eyes. Still to see him when he is no longer there and to try to know, listen to, or read him when you know that you will see him no longer—and that is to cry.

“To have a friend, to look at him, to follow him with your eyes, to admire him in friendship, is to know in a more intense way, already injured, always insistent, and more and more unforgettable, that one of the two of you will inevitably see the other die. One of us, each says to himself, the day will come when one of the two of us will see himself no longer seeing the other and so will carry the other within him a while longer, his eyes following without seeing, the world suspended by some unique tear, each time unique, through which everything from then on, through which the world itself—and this day will come—will come to be reflected quivering, reflecting disappearance itself: the world, the whole world, the world itself, for death takes from us not only some particular life within the world, some moment that belongs to us, but, each time, without limit, someone through whom the world, and first of all our own world, will have opened up in a both finite and infinite—mortally infinite—way. That is the blurred and transparent testimony borne by this tear, this small, infinitely small, tear, which the mourning of friends passes through and endures even before death, and always singularly so, always irreplaceably."

--Jacques Derrida