First, if you don't follow the rules, you can't make a square. -Mencius: a native of Lu (now Zoucheng, Shandong) during the Warring States Period.

1. explanation: you must have certain rules, rules and practices in doing anything, otherwise you will not succeed.

2. From "Leaving Louzhang Sentence" in "Mencius" Original text: Mencius said: "Being away from Louzhi, losing the cleverness of the public, not following the rules, can't be a square; Shi Kuang's cleverness is not based on the six laws, but not on the five tones; Yao and Shun can't rule the world without benevolent governance.

3. Mencius said: "Even with Li Lou's good eyesight and Gong Bozi's good skills, if you don't use compasses and rulers, you can't accurately draw squares and circles; Even with Shi Kuang's sound-judging ability, if you don't use the six tones, you can't correct the five tones; Even with Yao and Shun's theory, we can't govern the world well if we don't implement benevolent policies.

second, if the moment is not right, it cannot be square; If the rules are not correct, they cannot be round. -Huai Nanzi, by Liu An (179 BC-122 BC).

1. explanation: if the tools for drawing squares are not accurate, you can't draw a standard square; If the tool for drawing a circle is not accurate, it is impossible to draw a standard circle. Metaphor, as a rule, must be fair and accurate, and it will be logical for people to follow it.

2, from: Huai Nan Zi Quan Yan Xun.

3. Original text: If the moment is not right, it cannot be square; If the gauge is not correct, it cannot be round; The body, the rules of things are also. He who can be upright without knowing that he has wronged himself.

4. Interpretation: If the tool for drawing a square is not accurate, a standard square cannot be drawn; If the tool for drawing a circle is not accurate, it is impossible to draw a standard circle. People who set an example by themselves behave themselves. I haven't heard that I can make people upright.

third, you can know the balance by hanging it, but you can know the circle without rules. —— Han Feizi: A native of Xinzheng (now Henan) in South Korea at the end of the Warring States Period.

1. Explanation: If there is a balance, it can accurately measure whether the weights of two objects are even; If you draw with compasses, the circle you draw must be fixed.

2. It comes from "Everything is done by Han Feizi": "A husband can know the balance, but he can know the circle, and he can know the perfect way. The wise Lord made the people adorn the Tao, so they made great contributions. Interpretation of the rules and Ren Qiao, interpretation of the law and wisdom, confusion. "

3. It is a foolproof way to know whether the scale is flat or not and whether the circle is round or not only by setting the compasses. A wise monarch can make the people use Tao to hurt themselves, so he saves effort and makes contributions. It is a way to confuse people by throwing away rules and relying solely on skills and giving up the rule of law and relying solely on wisdom.

Fourth, although my knowledge seems high to you, I think that people's learning is like a circle. The more things they learn, the longer the circumference of the circle, and the more opportunities they have to contact the outside world. -Einstein

5. There should be no hate, so why should we be round when we leave? -Song Su Shi's Mid-Autumn Festival in Bingchen

Translation: The bright moon shouldn't have any resentment towards people. Why is it only round when people leave?

six, people have joys and sorrows, and the moon is full of ups and downs, which is difficult to complete in ancient times. -Song Su Shi's Mid-Autumn Festival in Bingchen

Translation: People have changes in joys and sorrows, and the moon has a change between rain and shine. This kind of thing has been difficult to be comprehensive since ancient times.