利用IOS统计文本中单词出现的次数

Two of the hardest things to accomplish in this world are to acquire wealth by honest effort and, having gained it, to learn how to use it properly. Recently I walked into the locker room of a rather well-known golf club after finishing a round. It was in the late afternoon and most of the members had left for their homes. But a half-dozen or so men past middle age were still seated at tables talking aimlessly and drinking more than was good for them. These same men can be found there day after day and, strangely enough, each one of these men had been a man of affairs and wealth, successful in business and respected in the community. If material prosperity were the chief requisite for happiness, then each one should have been happy. Yet, it seemed to me, something very important was missing, else there would not have been the constant effort to escape the realities of life through Scotch and soda. They knew, each one of them, that their productivity had ceased. When a fruit tree ceases to bear its fruit, it is dying. And it is even so with man. What is the answer to a long and happy existence in this world of ours? I think I found it long ago in a passage from the book, Genesis, which caught my eyes while I was thumbing through my Bible. The words were few, but they became indelibly impressed on my mind: “In the sweat of thy face shalt thou eat thy bread.” To me, that has been a challenge from my earliest recollections. In fact, the battle of life, of existence, is a challenge to everyone. The immortal words of St. Paul, too, have been and always will be a great inspiration to me. At the end of the road I want to be able to feel that I have fought a good fight, I have finished the course, I have kept the faith.