我相信开心的女孩子才是最漂亮的。
I believe that happy girls are the prettiest girls.  
每一次成功只是为更困难的问题买了一张入场券。
I had ambition not only to go farther than any man had been before, but as far as it was possible for a man to go.
通货膨胀是夜间的小偷。