Worry and disaster can make people (or countries) survive and develop, while comfort and enjoyment can make people (or countries) go to extinction.
2, know everything, say everything. -Su Xun's Balance and Vision in the Song Dynasty
Translation: That is to say what you know, and say it without reservation.
3, perseverance, rotten wood can not be carved. -"Xunzi, Encourage Learning"
If you don't insist on doing one thing, even rotten wood can't be carved.
4, the embankment of a thousand miles, collapsed in the ant nest. -Han Fei's "Han Fei Yu Zi Lao" in the pre-Qin period
Thousands of miles of levees often collapse because of ant (termite) caves. This is a metaphor. Carelessness in small things can lead to catastrophe.
Man proposes, God disposes. -Luo Guanzhong's Romance of the Three Kingdoms in the Ming Dynasty
I have done my best, but whether I can achieve my goal depends on luck.