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

Friendship is always a sweet responsibility, never an opportunity.

A friendship founded on business is better than a business founded on friendship.

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

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

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

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

A friend is someone who gives you total freedom to be yourself.

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

So long as the memory of certain beloved friends lives in my heart, I shall say that life is good.