Famous aphorisms about rules include:

1. If the rules are not correct, they cannot be square; if the rules are not correct, they cannot be round. ——Huainanzi

Explanation: If the tool for drawing a square is not accurate, it will be impossible to draw a standard square; if the tool for drawing a circle is not accurate, it will be impossible to draw a standard circle. People who set an example by example do things in a good manner. I have never heard that I can make others upright.

2. The regular system cannot wait for changes, and one application cannot adapt to all directions. ——Ge Hong

Explanation: Thinking based on observation, rationally explaining the reasons for changes in things, the connections between things, or the laws of development of things.

3. If you hang the balance, you will know the balance; if there is no gauge, you will know the circle. ——Han Feizi

Explanation: If you have a scale, you know how to measure fairness; if you have a compass, you know how to draw a circle accurately.

4. This great world is always spinning and changing its rules. ——Tennyson

5. An ordinary person can only make regular things, but only extraordinary geniuses can control creation. ——Hugo

6. Laws can avoid mistakes, but they will never give beauty. ——Stop. Johnson

7. There are rules for everything. ——Democritus

8. Our party must be serious in principle, but must be highly flexible in the specific work of implementing the principle. ——Liu Shaoqi

9. Let us remember that the principle of justice must be implemented at the bottom of society. ——Cicero, the ancient Roman statesman

10. There are no rules without exceptions. ——German military theorist and military historian Clausewitz