"I know things silently, I am not tired of learning, I am not tired of teaching others, what is it for me!" ("Shu Er") This is Confucius's autobiography, which talks about the attitude and method of learning. You should keep what you have learned silently in your heart and continue to accumulate knowledge. "Never tire of learning" refers to the spirit of eagerness to learn, never ending learning, and never feeling satisfied. "Being tireless in teaching" refers to teaching attitude and teaching students enthusiastically. Confucius did this all his life, so he said: "What is there for me?" It showed Confucius' confidence. I have always been content with the status quo and unwilling to change. After reading this sentence, I understand that Confucius has been making progress. Why should I not work hard?