Friendship is always a sweet responsibility, never an opportunity.

True friendship is like sound health the value of it is seldom known until it is lost.

Friendship is a strong and habitual inclination in two persons to promote the good and happiness of one another.

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

Be true to your work, your word, and your friend.

It is important to our friends to believe that we are unreservedly frank with them, and important to friendship that we are not.

A true friend never gets in your way unless you happen to be going down.

Am I not destroying my enemies when I make friends of them?

Even where friendship is concerned, it takes me a long time to trust people.