Treating others with courtesy means treating others as you like them to treat you. For a gifted person, knowing how to treat others equally is the greatest and truest quality. If a person is kind and polite to strangers, he must be a sincere and compassionate good man. His heart is often connected with others' hearts, not isolated.

The reason of social communication is that people's life is boring and full. Social needs drove them together, but their own disgusting behavior drove them away. Finally, they find a suitable interval that can tolerate each other, that is, politeness. True courtesy is self-denial, that is, doing everything possible to make people around you as calm as themselves.

Seeing that friends need unnatural behavior, you can know that their feelings have declined. Careful manners are for people you don't like, and they are no more sincere than the sentence "Your respectful servant" at the end of the book. Of course, this is widely recognized and understood by people.

Educated people can invent beautiful meanings in beautiful things because these beautiful things contain hope. I only ask you one thing: if you can live through this era, don't forget, don't forget the good guys and don't forget the bad guys.

People can't be rich, people can't be happy, people can't be satisfied, let them suffer, let them not know tomorrow's meal, and they will help each other.