True knowledge is when one knows the limitations of one's knowledge.

Study as though you cannot catch up to it, and as though you fear you are going to lose it.

To be fond of learning is near to wisdom; to practice with vigor is near to benevolence; and to be conscious of shame is near to fortitude.

Behave when away from home as though you were in the presence of an honored guest. Employ the people as though you were assisting at an important sacrifice. Do not do to others what you would not like yourself. Then there will be no feelings of opposition to you, whether it is the affairs of a state that you are handling or the affairs of a family.

If you look into your own heart, and you find nothing wrong there, what is there to worry about? What is there to fear?

The Three Armies can be deprived of their commanding officer, but even a common man cannot be deprived of his purpose.

To know your faults and be able to change is the greatest virtue.