When we encounter setbacks and difficulties, we always think of a sentence in The Analects of Confucius: "Knowing is not as good as being kind, and being kind is not as good as being happy." This sentence means that people who know knowledge are not as good as those who like it, and those who like it are not as good as those who like it. This sentence tells us that only by being interested in knowledge and enjoying it can we master knowledge better and get more fun and a sense of accomplishment from it.