The hardest thing is to know yourself. -Greece

It is a hero to have the courage to bear the fate. -Hayes

I have nothing to do with people who do good deeds, and I have nothing to read. Zhou Enlai

Reading makes a full man, conversation makes an agile man, and writing makes an exact man. bacon

The greatest pride and the greatest inferiority both show that the mind is the most fragile. -Spinoza

Self-knowledge is the most rare knowledge. -Spain

Courage leads to heaven, cowardice to hell. Seneca

Do you love life? Then don't waste time, because time is the material of life. Franklin

Reading all good books is like talking to the most outstanding people in the past. Descartes

The more incompetent, the more pretentious. -Deng Tuo

The more incompetent people are, the more they like to find fault with others. -Ireland

He who knows others is wise, and he who knows himself is wise. The winner is strong, and the winner is strong. -Lao Tzu

Strong-willed people can hold the world in their hands and knead it like mud. -Goethe

The most challenging challenge is to improve yourself. Michael F. Sterley

Spare-time life should be meaningful and not deviant. Washington

Even if a person has reached the peak, he should still strive to improve himself. Russell Baker

Don't run away from troubles and difficulties, stand up and challenge them, then overcome them. Daisaku Ikeda

I live to make others live better. -Lei Feng

Master books, not be mastered by books; Reading is for living, not for reading. -Bulwer