Life is always about reading and learning, but we should pay attention to the methods of reading. Zhuangzi once sighed, "My life is limited, but my knowledge is limited." It profoundly reveals the contradiction between infinite knowledge and limited life. This article was written by a famous teacher. Especially in today's information-intensive era, information and carrier forms are becoming more and more diversified. The surge of knowledge has brought us a reading crisis. Qian Xuesen said that he studied supersonic aerodynamics when he was a graduate student. I have read all the relevant papers all over the world, because there are not many * * *, and now I can't even move, let alone read them. This embodies the contradiction that Zhuangzi said two thousand years ago that life is limited and knowledge is infinite. To solve the contradiction between life and knowledge, we must study selectively.

There is a story abroad called Focus. It is said that there is a young scholar who studies hard and works hard at school. However, the results are always not very good. One day, he found Fabris, an entomologist, and said with great distress, "I have devoted all my energy to my hobby tirelessly, but the effect is not great." What's wrong? " Fabrice said approvingly, "It seems that you are an ambitious young man." The young man said, "Yes, I love science, but I also love literature, music and art. I almost put all my energy into it." Fabres suddenly understood. He humorously took out a magnifying glass from his pocket and pointed it at an insect. He said, "Try to concentrate all your energy on one focus, just like this magnifying glass is aimed at an insect."

Obviously, when we choose to study, we must concentrate as Fabres focused his magnifying glass on insects. If we choose a certain main direction, we will concentrate on one or several subjects and realize our ambitions in our limited life.

Choosing the main direction of reading must first be combined with your own work. Achieving the unity of learning and application can save time and effort and get twice the result with half the effort. Secondly, we should also take into account our hobbies and specialties. Enthusiasm is a special cognitive tendency in the process of acquiring knowledge, studying knowledge and using knowledge.