The way of Heaven and Earth may be completely declared in one sentence: They are without any doubleness, and so they produce things in a manner that is unfathomable.

Make faithfulness and truth thy masters: have no friends unlike thyself: be not ashamed to mend thy faults.

A man is great not because he hasn't failed; a man is great because failure hasn't stopped him.

Base yourself in loyalty and trust. Don't be companion with those who are not your moral equal. When you make a mistake, don't hesitate to correct it.

Learning without thought is labour lost.

Future generation is the most important thing.

Reviewing what you have learned and learning anew, you are fit to be a teacher.