A man's growth is seen in the successive choirs of his friends.

Love is blind friendship closes its eyes.

A friend may well be reckoned the masterpiece of nature.

If it's very painful for you to criticize your friends - you're safe in doing it. But if you take the slightest pleasure in it, that's the time to hold your tongue.

True friendship can afford true knowledge. It does not depend on darkness and ignorance.