When people are young, they are more concentrated, but when they grow up, they are easy to disperse, so we should educate them early and don't miss a good opportunity. When I was seven years old, I recited "Lingguang Dian Fu". Today, I haven't paid attention to it for ten years, but I still won't forget: after I am 20 years old, the scriptures I have memorized will be abandoned if I don't pay attention in January. However, some people have a hard life and have no chance to learn in their prime. They will continue to study in the future and can't give up. Confucius said that by the time I was fifty years old, I would have learned the Book of Changes, so I wouldn't make any big mistakes. Wei Wu and Yuan Yi, the older they get, the deeper they learn, which is why they never tire of learning when they are young. Ceng Zi began to study at the age of 70, but he became famous all over the world. Xunzi began to study at the age of 50 and continued to study abroad. He is still a great scholar. Gong Sunhong began to study the Spring and Autumn Period in his forties and became a prime minister. Zhu Jun also began to study the Zhouyi and The Analects of Confucius at the age of 40, and Huangfu Mi was taught to abide by the Book of Filial Piety and The Analects of Confucius at the age of 20: they both became bachelors and were addicted to going to bed late and getting up early (going to bed early, going to bed early and getting up late d). It is foolish to say that you will be late if you don't study before you get married, and you will start to be lazy and slack after you get married. People who study as children are like the newborn sun, and those who study in old age are like walking at night with candles, which is better than those who can't see anything with their eyes closed.