(1) people without faith, I don't know what it can also-Confucius.

(2) the impermanence of faith, the impermanence of chastity, and everything, if it is a villain-Xunzi.

story

(1) Ceng Zi kill pigs.

Ceng Zi's wife went to the market, and her son went with her, crying as he walked. Mother said to him, "Go home. When I come back, I'll kill the pig for you." His wife came back from the market and Ceng Zi wanted to catch some pigs to kill them. His wife stopped him and said, "It's just a joke with the children." Ceng Zi said, "Never joke with children. Children are ignorant at first, so they should learn from their parents and listen to their instructions. Now if you lie to him, you are teaching your children to lie. If the mother deceives the child and the child does not believe the mother, it is impossible to teach the child well. " Ceng Zi then killed the pig.

(2) At the end of the Qin Dynasty, there was a man named Ji Bu, who always kept his word and had a very high reputation. Many people have established a strong friendship with him. At that time, there was even a proverb: "It is better to get a hundred pounds of gold than to keep a promise." Later, he offended Emperor Gaozu Liu Bang and was offered a reward for his capture. As a result, his old friends not only were not confused by the heavy money, but also risked the extinction of Jiuzu to protect him from disaster. A person who is honest and trustworthy will naturally get a lot of help and gain everyone's respect and friendship. On the other hand, if you covet temporary comfort or petty advantages and lose trust in your friends, you will get "benefits" on the surface. But for this benefit, he ruined his reputation, which is much more important than material things. Therefore, breaking a promise to a friend is tantamount to losing a watermelon and picking up sesame seeds, which is not worth the loss.