Famous sentence: Born in worry, died in happiness-Mencius is prepared for danger in times of peace-Zuo Zhuan, a gentleman is safe but does not forget danger, keeps but does not forget death, and manages without forgetting chaos, which means that the country can protect itself-Zhou Wenwang can rejuvenate the country by worrying about work, and Yi Yu can die-Ouyang Xiu's example: 1. Zhou Wenwang is arrested and plays Zhouyi, which was written by Zhong Nieu. Lu Lan, Han Fei imprisoned Qin, Difficult Talk, Lonely Anger and Poem are 3 articles, which are probably the works of sages who are angry. Cao Xueqin's family eats porridge and writes A Dream of Red Mansions. 2. The story of boiling frogs in warm water. Someone has done such an experiment, throwing a frog into a hot oil pan unexpectedly, the frog can jump out and escape from the trap. Then he put the same frog in a gradually heated water pot. This time, he felt so comfortable that he realized that the danger was coming, but he was weak and eventually died at the bottom of the pot. This is the frog effect. Without a sense of crisis, it does not mean that the crisis does not exist. People who lack a sense of crisis will eventually be stumped by the crisis. 3. Sheep and Lions Sheep and lions on the African grasslands follow this rule: run fast. Sheep think they must be faster than the fastest lion, while lions think they must be faster than the slowest sheep. 4. After Gou Jian surrendered, he went to the State of Wu with his wife. They lived in a stone house next to Fu Cha's father's grave and kept horses. Every time Fu Cha travels, Gou Jian always follows respectfully with a whip. Later, Fu Cha, the prince of Wu, was ill. In order to show his loyalty to Fu Cha, Gou Jian personally tasted Fu Cha's stool, so as to judge the date when Fu Cha recovered. The date of Fu Cha's illness coincided with Gou Jian's prediction. Fu Cha thought that Gou Jian was loyal to him, so he put him and his wife back to Yue. After he returned to China, Gou Jian, the King of Yue, was determined to avenge himself. In order not to forget the national humiliation, he slept on the firewood, and the place where he sat and lay hung with gall, indicating that he did not forget the national humiliation and hardship. After ten years' accumulation, the State of Yue finally changed from a weak country to a strong one, and finally defeated the State of Wu. The King of Wu committed suicide in shame. If he did not maintain the sense of crisis of national subjugation, how could Gou Jian avenge himself? 5. After Li Zicheng, the king of Li Zicheng, broke into Beijing, he thought that the world would be settled, and you're done. The new bureaucrats who came from peasants lost all the vigor of the world during the uprising, just trying to enjoy the happiness in Beijing. "Celebrating the New Year every day", Li Zicheng wanted to be the emperor as soon as possible, Niu Jinxing wanted to be the Taiping Prime Minister, and all the generals wanted to build a government, thinking that there was no threat. However, the Qing soldiers entered the customs soon, and the Ming armed forces made a comeback. The insurgents were unprepared and lost.