Did you understand Lecture Room when you were a kid? Teacher Bi Shumin: Many years ago, I gave a speech at a university. What is the meaning of life? I said that life is actually meaningless. After I finished saying this, the whole audience suddenly burst into applause. It may be a bit exaggerated, but it was indeed a warm applause. Later, I said to my classmates, why are you so happy when I said that life is meaningless? I said that I haven't finished my words yet, what do I want to say next?

Life is meaningless, but you must establish a meaning for yourself, which is our sense of purpose. This sense of purpose cannot be replaced by others, but you have to work hard to complete it yourself. In today's society, if you don't establish a sense of purpose, I believe you will not experience true happiness. At most, you will only experience the satisfaction of your appetite and sexual desire, the satisfaction of your basic instincts, and the momentary comfort after the desire is filled, but that will definitely pass.

Human happiness depends only on our firm sense of purpose and our persistent efforts. When our entire body is striving and working for a lofty goal, our body can secrete the substance that makes us feel happy in a highly coordinated state.