True wisdom is knowing what you don't know

The superior man does what is proper to the station in which he is; he does not desire to go beyond this. In a position of wealth and honor, he does what is proper to a position of wealth and honor. In a poor and low position, he does what is proper to a poor and low position.

A man who lacks reliability is utterly useless.

In vain I have looked for a single man capable of seeing his own faults and bringing the charge home against himself.

When it is obvious that the goals cannot be reached, don't adjust the goals, adjust the action steps.

Don't worry if people don't recognize your merits; worry that you may not recognize theirs.

A man who has committed a mistake and does not correct it is committing another mistake.