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

As iron sharpens iron, so a friend sharpens a friend.

One of the most beautiful qualities of true friendship is to understand and to be understood.

Each friend represents a world in us, a world not born until they arrive, and it is only by this meeting that a new world is born.

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

He has no enemies, but is intensely disliked by his friends.

That friendship will not continue to the end which is begun for an end.

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

A true friend is the greatest of all blessings, and that which we take the least care of all to acquire.

Lots of people want to ride with you in the limo, but what you want is someone who will take the bus with you when the limo breaks down.