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

Friendship is always a sweet responsibility, never an opportunity.

Friends and good manners will carry you where money won't go.

Never contract friendship with a man that is not better than thyself.

Friendship is the source of the greatest pleasures, and without friends even the most agreeable pursuits become tedious.

I value the friend who for me finds time on his calendar, but I cherish the friend who for me does not consult his calendar.

Friendship is the shadow of the evening, which increases with the setting sun of life.

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.

Real friendship, like real poetry, is extremely rare - and precious as a pearl.