Friendship is a single soul dwelling in two bodies.
Friendship is one mind in different bodies.
Friendship is unnecessary, like philosophy, like art... It has no survival value; rather it is one of those things that give value to survival.
Friendship needs no words - it is solitude delivered from the anguish of loneliness.
Friendship... is not something you learn in school. But if you haven't learned the meaning of friendship, you really haven't learned anything.