记得以前读过一篇文字,不知哪个大主教写的墓志铭:when I was young , I tried to change the world ,my country ......I suddenly realized that ....what I could change is myself ! 有谁知道,请告知,谢谢

When I was a young man, I wanted to change the world. I found it was difficult to change the world, so I tried to change my nation. When I found I couldn't change the nation, I began to focus on my town. I couldn't change the town and as an older man, I tried to change my family. Now, as an old man, I realize the only thing I can change is myself, and suddenly I realize that if long ago I had changed myself, I could have made an impact on my family. My family and I could have made an impact on our town. Their impact could have changed the nation and I could indeed have changed the world. ~Unknown

the abovementioned is the whole sentence of your quote,and as for the author, I suppose it is unknown,无名氏。

呵呵，FOR YOU REFERENCE ONLY!