A famous saying that warns others not to swear.

1, a good word warms three winters, and a bad word hurts in June: from the mystery of augmented wisdom. An untimely word, like a sword, can stab a fragile heart. Even in summer and June, people will feel a chill and warn people to pay attention to their words and deeds.

2, do not do to others what you don't want them to do to you: Author: Confucius. Warn people to pay attention to their words and deeds, and don't impose things they don't want to undertake on others.

3, do not learn etiquette, nothing: Author: Confucius. It means that if you don't learn to pay attention to your manners, it will be difficult to have a foothold.