Antisthenes

The most useful piece of learning for the uses of life is to unlearn what is untrue. ”

Not to unlearn what you have learned is the most necessary kind of learning. ”

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. ”

As iron is eaten away by rust, so the envious are consumed by their own passion. ”

Quarrels often arise in marriages when the bridal gifts are excessive. ”