Knowing is knowing, not knowing is not knowing, this is knowing. ——"The Analects of Confucius"

My life also has a limit, but my knowledge also has no limit. ("Zhuangzi")

Intelligence comes from diligence, and genius comes from accumulation. ——Hua Luogeng

It is better to guard against the people's mouth than to guard against the river. (Mandarin)

A person who doesn’t want to cross a small river naturally doesn’t want to cross an ocean. The more you use the needle, the brighter it becomes, and the more you use the brain, the smarter it becomes. From the east to the sea, when will the rivers return to the west? If a young man does not work hard, the old man will be miserable. (Han Dynasty Yuefu "Long Song Xing")

A person who is quiet and taciturn may not be stupid, and a person who is chatty and eloquent may not be wise.

Killing the "now" also kills the "future". ——The future is the era of descendants. ——Lu Xun

Those who give up time will also give up on him. --Shakespeare

If a person breaks his promise, his reputation will be ruined. --Liu Xiang, Confucian scholar of the Han Dynasty

The internal and external should be consistent, and words and deeds should be consistent. --Han Fei, Warring States philosopher and educator