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

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

There is nothing on this earth more to be prized than true friendship.

Friendship is always a sweet responsibility, never an opportunity.

There is nothing on this earth more to be prized than true friendship.

Friendship, of itself a holy tie, is made more sacred by adversity.

A quarrel between friends, when made up, adds a new tie to friendship.

One's friends are that part of the human race with which one can be human.

There is some self-interest behind every friendship. There is no friendship without self-interests. This is a bitter truth.

Caring for but never trying to own may be a further way to define friendship.