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

It is more shameful to distrust our friends than to be deceived by them.

Depth of friendship does not depend on length of acquaintance.

Friends show their love in times of trouble, not in happiness.

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

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

Never have a companion that casts you in the shade.

Friendship is unnecessary, like philosophy, like art... It has no survival value rather it is one of those things that give value to survival.

Be courteous to all, but intimate with few, and let those few be well tried before you give them your confidence.

Friendship, like the immortality of the soul, is too good to be believed.