1. 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. ——Xunzi

2. We should be enthusiastically committed to acting morally rather than talking about morality. ——Democritus

3. There are two kinds of peaceful violence, namely law and courtesy. ——Germany and Goethe

4. The way is to tell the truth, and the whole thing is to be polite. ——"The Analects of Confucius"

5. Politeness makes polite people happy, and also makes people who are treated politely happy. ——F. Mendes

6. The journey of a husband and gentleman should be quiet to cultivate one's character, and frugal to cultivate virtue. If it is not indifferent, it will not clear its aspirations, and if it is not tranquil, it will not be far-reaching. ——Zhuge Liang.