Descartes' explanation

 　　Once, the world-renowned mathematician Descartes gave a lecture at a university, which was unprecedented. Many students wanted to see him alone, thinking that Descartes would accept him enthusiastically, but he refused all the students who came to see him.

　　At noon that day, as soon as Descartes got up during his lunch break, the waiter told him: “A student came here under heavy rain. After waiting for noon, we led him to the living room. He hopes to see you and ask for advice. A few questions." After

　　Descartes heard this, he said to the waiter: "You tell him that I won't see."

　　"But, I think he is very sincere, just want to see you. Are you so disappointed? These days, you have rejected all the students’ requests to see, so why not meet?” Obviously, the waiter was a little dissatisfied with Descartes’ attitude.

　　Descartes stopped talking and leaned on the desk to work. Seeing that Descartes did not respond, the waiter retired boringly.

　　The next day, Descartes was about to leave here and return to the Netherlands, but the hotel entrance was blocked by the protesting students. Many people held placards in their hands and loudly condemned Descartes for disrespecting students and being too arrogant...

　　Descartes was not angry. I want to leave quickly amidst condemnation and abuse. However, these students were so emotional that they would not let Descartes go, and he must be asked to explain.

　　Obviously, this was incited by someone. Descartes couldn't help but sat in the hall without saying a word. At this moment, a group of students suddenly arrived at the school. They rushed into the hotel and escorted Descartes out of the hotel.

　　In the car, Descartes’ assistant could not hold back anymore, and said to him: “These days, you only sleep for 3 hours every night, and you have responded to more than 400 letters from students, all of which are written by hand. , Why don’t you explain it and cause such a big trouble? It also hurts your reputation!"

　　Descartes smiled and said to his assistant: "Explanation is always superfluous. Because people who understand you don’t need it, they don’t understand you. People who do not need it, just like the scene that happened just now. But I believe that everyone will understand it eventually."

　　Descartes returned to the Netherlands and resumed his old life. Just a month later, he received hundreds of apology letters one after another, all of which were sent by students who blocked the door and prevented him from leaving.