2, static to cultivate one's morality, frugal to cultivate one's morality. -Zhuge Liang

3, be careful, even when you are alone, it is not good to say bad things or do bad things, but learn to be more shameful in front of yourself than in front of others. -democritus

Politeness and consideration cost nothing, but are more valuable than anything else. Cervantes

5, Germany will report, complain and not complain. Qian Zhao

6, a gentleman is good, but also the good of others. -Book of Rites

7, do not suffer from disrespect, suffer from moral disrespect; Not ashamed of Lu's disagreement, but ashamed of his lack of wisdom. -Zhang Heng

8. Politeness makes polite people happy, and also makes people who are treated politely happy. -Montez

9. The most important thing in life is politeness, which is more important than the highest wisdom and all knowledge. Aleksandr Herzen