-Shakespeare
Immersed in the mud and not eroded by the sugar-coated shells of the bourgeoisie is the most valuable revolutionary quality.
Zhou Enlai
The saddest thing for a person is the death of conscience.
—— Guo Moruo
Reason is higher than mind, and thought is more reliable than feeling.
Gorky
Quiet to cultivate one's morality, frugal to cultivate one's morality. -Zhuge Liang
A gentleman worries about Tao but not poverty. Confucius
The extravagant and lazy are poor, and the thrifty are rich. -Han Fei
A gentleman's journey is quiet to cultivate one's morality, frugal to cultivate one's morality, indifferent to one's ambition, and quiet to a great distance.
-Zhuge Liang
Luxury is frugal, but fierceness is in sight. -Bai Juyi