A middle school textbook once learned an article called "for learning", the original text is as follows: Is it easy or difficult to do things in the world? It is easy for those who are difficult to do it; If you don't do it, it's easy and difficult. How difficult is it to learn? Learning is easy for those who are difficult; If you don't learn, it's easy and difficult. There are two monks in Shu, one is poor and the other is rich. The poor said to the rich, "what is the Sou...