There are four types of men in this world: 1. The man who knows, and knows that he knows; he is wise, so consult him. 2. The man who knows, but doesn't know that he knows; help him not forget what he knows. 3. The man who knows not, and knows that he knows not; teach him. 4. Finally, there is the man who knows not but pretends that he knows; he is a fool, so avoid him.

My friend is he who will tell me my faults in private.

Drink poison rather than worry.

Your secret is your prisoner; once you reveal it, you become its slave.

The test of good manners is to be patient with the bad ones.

All men have one entrance into life, and the like going out.

The beginning of wisdom is to desire it.