Let there be no purpose in friendship save the deepening of the spirit.

Wishing to be friends is quick work, but friendship is a slow ripening fruit.

Friendship improves happiness and abates misery, by the doubling of our joy and the dividing of our grief.

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

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

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

Never make friends with people who are above or below you in status. Such friendships will never give you any happiness.

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

Walking with a friend in the dark is better than walking alone in the light.

A friend may well be reckoned the masterpiece of nature.