Friendship without self-interest is one of the rare and beautiful things of life.

Accountability in friendship is the equivalent of love without strategy.

Be slow to fall into friendship but when thou art in, continue firm and constant.

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

Depth of friendship does not depend on length of acquaintance.

Friendship is certainly the finest balm for the pangs of disappointed love.

The language of friendship is not words but meanings.

True friendship ought never to conceal what it thinks.

Never explain - your friends do not need it and your enemies will not believe you anyway.

Instead of loving your enemies - treat your friends a little better.