记得爱尔兰作家奥凯西把他自传的第一部命名为《我敲门》,这是不是说每个伟大的思想家、革命家、科学家、艺术家都付出他一生的气力在敲门,想敲开宇宙的门、自然的门、真理的门、人类心灵的门、成功的门?小说家爱德加尔说:“当我们前进的路上横出一道坚固的大门而难以推开时,我们该怎么办?是回避它,还是奋力启开它,去探索那边的奥秘呢?也许大门那边正是我们梦寐以求的东西。我们必须全力上去打开它!” I remember that the Irish writer Okesi named his first autobiography as “I knock on the door.” Does this mean that every great thinker, revolutionary, scientist, and artist has given his life’s strength to knock on the door and try to knock open the universe? The Door, the Door of Nature, the Door of Truth, the Door of the Human Mind, the Gate of Success? The novelist Edgar said: “When we go forward, we have a solid gate and it is hard to push away. What should we do? Is it avoiding it, or is it struggling to open it up to explore the mysteries there? Maybe the door is exactly what we dream of. We must go all out to open it!”