Antisthenes

There are only two people who tell you the truth about yourself--an enemy who has lost his temper and a friend who loves you dearly.
I am sadly afraid that I must have done some wicked thing.
As iron is eaten away by rust, so the envious are consumed by their own passion.
There are only two people who can tell you the truth about yourself, an enemy who has lost his temper and a friend who loves you dearly.