A classic sentence that is hard to repay.

1. Love debt is hard to repay, and it is even harder to repay. -Su Qin

If you think negatively about people, your enthusiasm will cool down. If you consider people positively, your cold heart will warm up. -Su Qin

3. Human feelings are like waves. -"Drinking and Pei Di" by Tang Dynasty poet Wang Wei

Don's drinking and. The general idea of this sentence is that human feelings are as changeable as waves. The original poem of "Drinking and Pei Di" is: "Drinking and Jun Jun being lenient, ~. When we meet, we always guard against swords, but suddenly you are the first to laugh at me. The grass is always moistened by drizzle, but the flowers are cold in the spring breeze when they want to spread. It is better to lie high and eat more. " Poetry reveals that human feelings are cold and warm, and the world is cold. This sentence compares the capriciousness of human feelings to the ups and downs of waves, which rise and fall in an instant and human feelings change in an instant. It is an accurate, popular and easy-to-understand metaphor, which visualizes the human world and is easily accepted by people.

4. Human debt, meat to return. -Formerly known as Zhang Xin, Dwelling House by China woman writer Liu Liu.

Since resigning, human feelings have stood the test. -Yuan Mei, a poet in the Qing Dynasty

6. Human feelings are warm and cold. -Southern Song Dynasty poets are thorough.

7. All the rules in the world must be based on human feelings. -Han Fei, philosopher at the end of the Warring States Period, Han Feizi