Even four harnessed horses cannot bring imprudent words back into the mouth.

The superior man does what is proper to the station in which he is; he does not desire to go beyond this.

First and foremost, be faithful to your superiors, keep all promises, refuse the friendship of all who are not like you; and if you have made a mistake, do not be afraid of admitting the fact and amending your ways.

Wisdom is worried for being slow in its speech and expeditious in its actions.

In old days men studied for the sake of self-improvement; nowadays men study in order to impress other people.

Don't curse the darkness, light a candle.

Let our reason, and not our senses, be the rule of our conduct; for reason will teach us to think wisely, to speak prudently, and to behave worthily.