美国著名作家爱默生说:“我宁可不读书,也不愿被书本的魅力所惑,迷失游离于自己的轨迹,成为一颗卫星,而不是星系。”他形象地说明了读书要有目的性。我国南北朝时的陆澄、晋朝的傅迪,都是学问“淹贯古今”的博学者,然而却没有半点成就,甚至“不能属辞”,即连文章都写不通顺,这样死读书的人被讥为“书厨”,按爱默生的说法,即是书的“卫星”。古往今来的大学问家,都主张有目的地读书。苏东坡说:“书富如入海,百货皆有。人之精力,不能兼收尽取,但得所欲求者尔。故 Emerson, a famous American writer, said: “I would rather not study, but also do not want to be confused by the charm of the book, lost in their own tracks, become a satellite, not a galaxy.” He vividly illustrates the purpose of reading Sex. Lu Cheng of our country during the Northern and Southern Dynasties and Fu Di of the Jin dynasty all learned the learned scholars of “ancient and modern”. However, they did not make any achievements or even “can not belittling words.” Man was ridiculed as a book chef, according to Emerson, the book’s “satellite.” Past and present university students, all advocate a purposeful study. Su Dongpo said: "The book is rich, such as into the sea, department stores are. People’s energy, can not be combined to take, but the desired person Seoul.