1. Those who respect others will always be respected by others; those who love others will always be loved by others. ——Mencius

2. Generals must not be arrogant. Being arrogant will lead to disrespect, being disrespectful will lead to alienation, and alienation will lead to rebellion. ——Zhuge Liang

3. Politeness is the second sun of an educated person. ——Heraclitus

4. Politeness can often replace the noblest emotions. ——Mérimée

5. Politeness is like an air cushion. There is nothing inside, but it can miraculously reduce bumps. ——Johnson

6. A person without manners is like a house without windows. ——Uyghur proverb

7. If a person is polite, he will be safe, but if he is not polite, he will be in danger. ——"Book of Rites"

8. Be knowledgeable in literature and make appointments with etiquette. ——Confucius

9. If a country is courteous, the country will be prosperous; if a family is courteous, the family will be prosperous; if the body is courteous, the body will be cultivated; if the heart is courteous, the heart will be peaceful. ——Qing Yan Yuan

10. Courteous demeanor is mainly a manifestation of self-restraint. ——American Edison

11. Politeness is the first important thing that children and young people should be particularly careful to develop into habits. ——English Locke

12. It is not difficult for a person with good intentions to express his courtesy to others. ——France Rousseau

13. Politeness makes polite people happy, and also makes people who are treated politely happy. ——France Mendes

14. Being polite and thoughtful costs nothing, but it is worth more than anything else. ——Spain Cervantes

15. There are two kinds of peaceful violence, that is, law and courtesy. ——Germany. Goethe

16. The most important thing in life is politeness. It is more important than the highest wisdom and all knowledge. ——Russian Herzen

17. People cannot stand up if they are rude, things cannot be accomplished if they are rude, and a country cannot be peaceful if it is rude. ——Xun Qing

18. Ritual is the scripture of heaven, the righteousness of earth, and the behavior of people. ——Zuo Qiuming

19. Virtue is a gem. ——John Locke, England

20. Being polite does not necessarily appear to be wise, but being impolite often appears to be stupid. ——Mei Landao