There should be this passage in the Chinese book: a person's most precious thing is life. Life is only once for a person. Therefore, a person's life should be spent like this: looking back, he will not regret wasting his time, nor will he be ashamed of doing nothing; In this way, on his deathbed, he can say that I devoted my life and all my energy to the most precious cause in life-the struggle for the liberation of mankind. We must seize the time to live, because even a sudden illness or accident may end life. 5. "How is steel tempered?" Under what circumstances did Paul say this famous saying about life?

For example, Paul's famous saying about life reads as follows: A person's most precious thing is life. Life is only once for a person. Therefore, a person's life should be spent like this: looking back, he will not regret wasting his time, nor will he be ashamed of doing nothing; In this way, when he dies, he can say that I have devoted my life and all my energy to the most precious cause in life-fighting for the liberation of mankind. Under what circumstances did he say it?