There are no rules for friendship. It must be left to itself. We cannot force it any more than love.

Am I not destroying my enemies when I make friends of them?

The language of friendship is not words but meanings

Friendship is a strong and habitual inclination in two persons to promote the good and happiness of one another.

The language of friendship is not words but meanings.

A true friend is the greatest of all blessings, and that which we take the least care of all to acquire.

Our friends interpret the world and ourselves to us, if we take them tenderly and truly.

A true friend is someone who is there for you when he'd rather be anywhere else.

Friendship is something that creates equality and mutuality, not a reward for finding equality or a way of intensifying existing mutuality.

Peace and friendship with all mankind is our wisest policy, and I wish we may be permitted to pursue it.