Confucius said, See the sage Si Qi, and introspect yourself-The Analects.
Xunzi is also a cloud, a gentleman is knowledgeable and saves himself every day, so he knows what he is and has no fault. -"Xunzi, Encourage Learning"
My greatest wisdom is to know my ignorance. -Socrates
The world is diverse and bustling, and people's hearts are easily driven by fame and fortune. If you don't pay attention to correcting yourself, you will lose your true self. If a person can often reflect on his mistakes, let go of himself and think of others everywhere, he can avoid many unnecessary quarrels and create a harmonious living environment with a pure and peaceful heart. A person who can often reflect on himself must have a noble personality, and a nation that is good at reflecting on itself must be an excellent nation.