and add a brick to a great undertaking, he has a sense of belonging, honor and self accomplishment, and he no longer feels empty.

Chen Xiaoxu, who was the actress of Lin Daiyu, suddenly became a monk at the peak of his career, and it once again makes people realized that money and honor were not satisfied. It is not uncommon for celebrities and rich people to become monks or suicide. In the eyes of ordinary people, they have everything, but in fact, they often lose themselves after success. The reason for getting lost is simple, because there is no faith. Today, with highly developed science, the number of religion believers in the world is still far greater than the number of non-religious people. From this we can see the importance of faith.

Like ordinary people, all great people and social elites also need faith. All great undertakings are done by human beings, and all human behavior is subject to thought. The beliefs of great men and social elites determine the direction of social development. Mao Zedong believed in Marxism and led China to become independent, prosperous, and powerful, together with some detours. Hitler believed in the racial superiority of Germany and therefore slaughtered Jews.

There are many tragedies in the history of China Communist Party. The most tragic tragedies did not stem from the personal qualities of leaders or the lack of internal and external conditions, but stem from theoretical errors. Heidegger and German people believed in Hitler, which are largely due to theoretical errors. From ancient times to the present, the degree of social development in any historical period and living standard ultimately depends on the level of theoretical development. Theory refers not only to natural science but also philosophy and social science.

German and Japanese fascists slaughtered civilians in World War II. After that, human rights seemed to be truly protected，but massacres continued. Between 1965 and 1967, Indonesia cracked down on the Communist Party and killed more than 500,000 innocent people, including 300,000 Chinese; during the Pol Pot administration from 1975 to 1979, more than 1.7 million people died in Cambodia. In 1994, Rwandan Hutu militia slaughters Tutsi and moderate Hutu people, and more than 800,000 people died in just over three months. Many scientists worry that the advancement of contemporary technology will destroy humanity.

 It is obviously not enough to solve these problems using only military and political means. Economic means are very important, but affluence cannot solve all the problems. After the Middle East got rich by oil, they then got poor because of the melee. After entering the 21st century, the rapid development of social productivity and science, human beings seem to enter heaven, but at the same time, international terrorism has intensified, and the horrific means of Al Qaeda and Islamic State are strongly contrasted with today's highly civilization. This is exposing the fatal defects of contemporary civilization. The develop