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

The best time to make friends is before you need them.

It is one of the blessings of old friends that you can afford to be stupid with them.

Success always necessitates a degree of ruthlessness. Given the choice of friendship or success, I'd probably choose success.

Sweet is the memory of distant friends! Like the mellow rays of the departing sun, it falls tenderly, yet sadly, on the heart.

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

If you have one true friend you have more than your share.

Friendship may, and often does, grow into love, but love never subsides into friendship.

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.

True friendship can afford true knowledge. It does not depend on darkness and ignorance.