It is more shameful to distrust our friends than to be deceived by them.
Never do a wrong thing to make a friend or to keep one.
Go often to the house of thy friend, weeds choke the unused path.
If a friend is in trouble, don’t annoy him by asking if there is anything you can do. Think up something appropriate and do it.
Be slow to fall into friendship; but when thou art in, continue firm and constant.
A good friend who points out mistakes and imperfections and rebukes evil is to be respected as if he reveals a secret of hidden treasure.
One of the surest evidences of friendship that one individual can display to another is telling him gently of a fault. If any other can excel it, it is listening to such a disclosure with gratitude, and amending the error.
Reprove your friends in secret, praise them openly.
A man cannot be said to succeed in this life who does not satisfy one friend.
Purchase not friends by gifts; when thou ceasest to give, such will cease to love.