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

Don't be concerned about others not appreciating you. Be concerned about your not appreciating others.

The whole end of speech is to be understood.

The nobler sort of man emphasizes the good qualities in others, and does not accentuate the bad. The inferior does.

To know that one knows what one knows, and to know that one doesn't know what one doesn't know, there lies true wisdom.

When three persons work together, each can be the teacher in some aspects

If a superior man abandon virtue, how can he fulfil the requirements of that name?