Poetry describing rules

If you don’t follow the rules, you can’t make a square or a circle. ------"Mencius" The foundation of benevolence and sage lies only in the system (Bai Juyi, Tang Dynasty) Those who make laws and decrees abolish private interests, and those who make laws and regulations abolish private principles. ——"Han Feizi." Youdu》The affairs of the world are not difficult to legislate, but difficult to implement. It is not difficult to listen to words, but difficult to ensure effective implementation.

——Zhang Juzheng I worked very hard to find it. Do you think you can?