Although Bao Ren An Shu wrote back to a friend, there were not many sentences that directly answered the contents of the friend's letter. The whole article is about expressing anger, complaining grievances, arguing and expressing one's will. This is a work with blood and tears and deep indignation. In this article, Sima Qian put forward a famous life motto, "People are inherently mortal, or they are heavier than Mount Tai, or lighter than a feather, so use them differently". He believes that in order to realize their ideals and beliefs, people with lofty ideals should either die generously or bear the burden of humiliation, die meaningfully and live worthily. It is more important to die for lofty ideals and beliefs than Mount Tai; Giving up the pursuit of life is as light as a feather. The choice of "life" or "death" should take the realization of life value as the ultimate goal. This view fully shows his respect for the right to life and embodies his unremitting pursuit of realizing the value of life. And he himself practiced his life motto. At the critical moment of life and death, he resolutely endured humiliation to survive, "put to death (corruption) without being sad." In order to inherit his father's unfinished business and realize his ideals and beliefs, he survived tenaciously and finally completed the writing of Historical Records, leaving a poem named Poet of Historians for future generations.