親愛的讀者們:在上一封信中,我已經約略地告訴過你們研究國際問題,應該注意那些部門的知識。你們也許感到你們所要知道的知識太多了,頭緒也太紛紜了,大有無從下手之苦。你們也許要存這樣的徼倖心,要求我告訴你們像天方夜譚中所說起的那種“開門的芝麻”(Open Sesame),以便抄捷徑而很快地就能有了成就。我可以告訴你們這種幻想是不應該有的。古代埃及的托拉梅(Ptolemy)王,曾經問過大幾何學家歐幾里德(Euelid),學幾何除開用他蓍的幾何原理外,有沒有捷徑。歐幾里德乾脆地告訴他:“別無王道”(No royal road)。這就是講學問並不為了王帝而就有捷徑。不過這不是講研究一切問題,在你們認識上,沒有正確的世界觀可 Dear Readers, In the previous letter, I had already told you roughly about international issues and should pay attention to the knowledge of those departments. You may feel that you have to know too much knowledge, ideas are too diverse, there is a great deal to start with. You may want to be so lucky to ask you to tell you the Open Sesame that you talked about in the middle of the night so that you can make a quick shortcut to success. I can tell you that this illusion should not exist. The king of ancient Egypt, Ptolemy, once asked the great geometrical scientist Euelid if there are any shortcuts to learning geometry besides using the geometric principles of Achillea. Euclid told him simply: “No royal road.” This is learning to ask for a shortcut without going to the Emperor. However, this does not mean that we should study all issues. In your understanding, there is no correct concept of the world