Self-knowledge is the most rare knowledge. ——Spain

The greatest pride and the greatest inferiority represent the weakness of the soul. —— Spinoza

The most difficult thing is to know yourself. ——Greece

The most spiritual person cannot see his own back. ——Africa

Everyone knows where shoes squeeze the feet. ——Latin America

Lazyness in thinking, unwillingness to delve into and understand deeply, complacency or contentment with trivial knowledge are all causes of intellectual poverty. This poverty is often described in one word: "stupidity." —— Gorky

Never fall into pride. Because when you are proud, you will be stubborn on occasions where you should agree; because when you are proud, you will reject the advice and help of friendship from others; because when you are proud, you will lose objective standards. ——Pavlov

Arrogance is a person. If you meet someone who defeats me, you will flatter me; if you meet someone who doesn't know me, you will be arrogant. ——Shen Juyun

It is not advisable to belittle oneself if one has a great spirit of lofty ideals. —— Zhuge Liang

The biggest obstacle to our learning is the known, not the unknown. ——Bernard

Those who sing praises to themselves have only one audience. —— Japan

Dissatisfaction with oneself is one of the fundamental characteristics of any truly talented person. ——Chekhov

Those who are afraid of you in front of you will definitely hate you behind your back. ——Britain

A fool is arrogant. His smugness is precisely the shortcoming that makes him laugh at others, and he often boasts about things that should be a great shame.

—— Krylov