"Reading is good, but you must remember that a book is just a book, you have to use your own brain." Whenever I open a book, Gorky's famous saying will be recalled in my ears. This is My favorite quotes. Some people think that as long as we read, we can understand all knowledge, but I think that if we just study hard, no matter how much we read, we can only be considered rich in knowledge, and it will never make us clear-headed. Only thinking and practice can make us successful. Didn’t the famous poet Lu You also say this? "What you see on paper is only shallow in the end, but you must do it in earnest."

Not only do many celebrities and writers think so, but history has also taught us a profound lesson. During the Warring States Period, the State of Zhao was at war with the State of Qin. King Zhao was preparing to appoint Zhao Kuo as a general. Lin Xiangru and Zhao's mother tried hard to dissuade him. King Zhao did not listen and appointed Zhao Kuo as a general. As expected, Zhao Kuo could only talk about war on paper and did not do anything at all. He knew how to use it flexibly, but he was shot to death by random arrows, and 400,000 Zhao soldiers were buried alive by the Qin army, leaving a laughing stock for future generations.

Since studying is useless, what are the consequences of being good at thinking and practicing for yourself? Li Shizhen, a famous doctor in the Qing Dynasty, is a good example. He found many errors in ancient medical books, so he decided to rewrite "Materia Medica". He traveled over mountains and ridges, overcame numerous difficulties and dangers, traveled to more than half of China, and tasted it personally. After searching through hundreds of herbs, it took nearly thirty years to finally complete the masterpiece of medicine - "Compendium of Materia Medica", which made great contributions to the development of medical science in the motherland.

The great mathematician Zu Chongzhi also used his personal experience to tell us that only personal practice is the only key to open the door to success. Zu Chongzhi liked to study astronomy and mathematics since he was a child. When he learned Liu Hui's circle cutting technique, he admired Liu Hui very much, but he thought that the π value obtained by Liu Hui was not accurate enough. In order to calculate a more accurate .π value, he hired a master carpenter to plan the floor of his study room brightly and smoothly. He also made a huge compass and a long ruler, and drew marks on the floor. A large circle with a diameter of one foot, and then he kept dividing the circle into equal parts to draw a regular hexagon, a regular hexagon, a regular 12-deformation, a regular 24-sided polygon... He drew and drew day and night, forgetting food and sleep, and calculated. After a while, he finally got a more accurate pi: 3.1415926＜π＜3.1415927, becoming the first person in the world to accurately calculate the value of pi to six decimal places.

You see, these examples tell us that copying book knowledge mechanically is not enough. Only by practicing it yourself can we achieve success. I will take this sentence as my motto and let it inspire me to keep exploring, thinking, and practicing!