存在主义

例句：

1. 1. He believes in the power of human existence and the importance of individual freedom.
   他相信人类的存在力量和个体自由的重要性。
2. 2. The existentialist philosophy emphasizes the importance of individual choice and responsibility.
   存在主义哲学强调个人选择和责任的重要性。
3. 3. In his book, he explores the concept of existentialism and its impact on modern society.
   在他的书中，他探讨了存在主义的概念及其对现代社会的影响。