He who flatters a man is his enemy. he who tells him of his faults is his maker.

Three things cannot long be hidden: the sun, the moon, and the truth.

He who fails to prepare, prepares to fail

Rate the task above the prize; will not the mind be raised? Fight thine own faults, not the faults of others; will not evil be mended?

Riches and honor are what everyone desires, but if they can be gained only by doing evil, they must not be held. Don't worry about not being in office, worry about qualifying yourself for office. Don't worry that no one knows you, but seek to be worthy of being known.

Without goodness a man cannot endure adversity for long, nor can he enjoy prosperity for long. The good man is naturally at ease with goodness. The wise man cultivates goodness for its advantage.

To know, is to know that you know nothing. That is the meaning of true knowledge. When you say something, say what you know. When you don't know something, say you don't know. That is knowledge.