The world is so unhappy because it is ignorant of the true self. Man's real nature is happiness. Happiness is inborn in the true self. Man's search for happiness is an unconscious search for his true self.
世界如此不快乐是因为它对真实的自我无知。人的真正本性是幸福的。幸福是与生俱来的在真实的自我中。人对幸福的追求是对他真实自我的无意识的追求。
关系模型基于谓词逻辑和集合论，为数据库管理提供了坚实的数学基础。
The more determinedly I exist, as myself, within the conditions of the time, the more clearly I shall hear the voice of the eternal.
"The camera is not just a tool; it's a character in the story."
煤炭开采的创新不仅仅是技术问题，更是思维方式的转变。