2. Related Source: Mencius once said: "If you love someone, you must love someone", which means that if you love someone, you must be loved. Later generations imitated this sentence and derived that "those who laugh at others will always laugh at others."
3. Original text: Mencius said: "A gentleman is different from others because of his meaning. A gentleman is considerate with benevolence. He is very polite. Benevolent people love others, while courteous people respect others. Those who love others will always love others; People who respect others will always respect others. If someone is here and he disobeys me, the gentleman will contradict himself: I will be unreasonable and rude. Is this thing ridiculous? " It turned out to be benevolence, righteousness and propriety, and its disobedience was justified. A gentleman will do the opposite: I will be unfaithful. Since he is a loyal minister, his crossing should be like this. The gentleman said,' This is also stupid. If so, then choose to be with the beast? "What's wrong with animals?" So a gentleman has a lifelong worry, not once. But there are worries: shun, people also; Me too. Shun is a worldly law, which can be passed down to future generations. I'm not a countryman, but I can worry. What is there to worry about? Just like Shun. If a gentleman suffers, he dies. There is no benevolence and inaction, and there is no indecent assault. If you suffer once, a gentleman will not suffer.