人生，是一輛噗噗向前的火車，它不會過站不停，只等乘客拉鈴；人生，是一本喳喳翻後的遊記，它不會墨乾紙盡，只等旅人斷筆。無止盡的話語能形容生命，能形容人生。然，真正決定人生去向的昰乘客，是旅人，是自我。可是僅僅是自我能解釋的嗎?單單自身能操作的嗎?
行為心理學家強調環境對人的強大影響。行為學家－華生曾說過，”如果你想要律師或醫生？只要你給我一個三歲的小孩。”即是能操弄環境，即能決定人生；之後，雖然認知心理學家才隱約地推翻了這個偏激的理論，強調人能靠自我的意識而改變，但是卻也無法推翻環境對人的影響。同樣的，人生所遇的窒礙和推力，再再地扳轉個人旅途的終點期望和目標意義，多少人能堅持自我之道？多少人是放浪隨波之道？
人生的交叉點，每每改變個人。有人因此成為標準的投機主義者，游離於眼前的利益；有人因此成為堅實的頑固主義者，盲守於自我的認知。對錯或黑白論人生是無意義，只是頗感到人的脆弱，因為人最終還是被環境深深影響，受限於人生交叉點上的選擇無奈。然而，以禪宗的觀點，本文的文意才是真真受限於此。
The human life is similar as the train which is never to stop to going forward to where the passenger wants to go until the customer pull off. Also, the human life is similar as the travel book which is written consistently by the traveler until the author stops writing. The human life can be described as limitless words. However, where the true life is to go is determined by the self who owns and seizes the true life. Can we control our life? Can we create our life?
Behaviorists emphasise that the environment deeply impacts people on their behaviour. The behaviorism of Watson said, “You give me a three year-old child, and then I can convert him to who you want to be.” It means that the human can be converted by the controllable environment. Although cognitive psychologists partly change behaviorists’ view, they cannot deny the importance of the environment for the human life. Ironically, the life of people can be converted and influenced by the positive background and the negative condition. Who can do what they want to do under this unpredictable environment.
Match points on the human life are the key time in the human life, and convert people. Someone could be become an opportunist in order to chase the benefits, but someone could be become a conservative in order to defend their thoughts. I don’t want to evaluate the meanings of the life, but feel the vulnerability of the human because people can be converted by the environment and match points. However, Zen, which is one theory of the Buddhism, will think my article has been restricted by what I want to demonstrate.
