人生是 一趟有来无往的列车，我们每个人一生下来就买了单程票，过去就过去了，走过来就走过来了。无论你多么后悔，都不能追回以前的时光。
所以光阴不能倒流就是这个意思。所以台湾女作家三毛说；我们尽可能的不缅怀往事,因为来时的路不能重走。这是非常明智而有理性的做法。
人生只售单程票，提醒我们要珍惜生命。生命于人，无论他是高贵的，低贱的，富有的,贫穷的，都只有一次，这一次可能是悠长的，也可能是短暂的。无论怎么样，我们都要善待这一次，美这一次，灿烂这一次。
人生只售单程票，提醒我们要把握好属于自己的这段时光，我们已经知道想重复再来一次是不可能的，但是怎样走这段路却是由自己决定的。我们要尽量提高自己的生命质量，在历史的长河里，每个人都是一颗小星星，我们要尽量是自己的生命之星亮一些，再亮一些。
人生只售单程票，我们在珍惜自己生命的同时，也要善待他人，善待其他生命，既燃我们每个人都是过客，我们彼此相伴，互相依存，我们愿意和一切善良的人作友好的伴侣.不是所有的人生路上都开满了鲜花,我们要在电闪雷鸣中也携起手来。
人生之旅不可逆，既然我们都是买了单程车票的旅客，每个人都只有珍惜这一次机会，把握住这一次机会，好好地走完这一段路。
译文:
life as a one way ticket
Life is a train which never turn back ,so as long as you begin this trip the ticket for this can only be one way ,once you have passed the place you can never be back , even you regret what you have missed and how eager you are that you want to back , the truth is you cant repeat anything for another try.
Therefore , the mean of the time can never return is the exactly same. As the Taiwan writer San mao put it ,what we should do is try to never indulge in the past for you cant re-walk the way you have passed. And in this way your life will be wise and reasonable.
What we can draw from the analogue that life is a one way ticket is that we should treasure our lives. As to man , no matter life is noble , humble ,rich or poor , it can only experience for one time , the trip may be very long or just for a while , however , there is by no means we should take it seriously , to enrich it , to make it gorgeous.
Besides you should treasure your own life since it never repeat ,you should treat others and their life friendly as well . Since that all of us are passers-by in the life trip , we should care about each others and to be good companies with every people of kindness. What we should remember is that not every one’s life is full of beautiful roses , in this case ,we should be hand in hand when we caught in the hardship like the lighting and thunder make our life full of difficulties.
Life is a trip never turn around, once we have been the one way tourist ,it is wise to take this chance seriously and make best use of it to give yourself a wonderful and successful trip.