The original text is: "life is the most precious thing for people, and life is only once for people." Therefore, one's life should be spent like this: when one looks back on the past, 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 of life and fought for the liberation of mankind. "