Riches bring anxiety; wisdom gives peace of mind.

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

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.

Kings may be judges of the earth, but wise men are the judges of kings.

The beginning of wisdom is to desire it.

The first step in the acquisition of wisdom is silence, the second listening, the third memory, the fourth practice, the fifth teaching others.

Drink poison rather than worry.