If you are not a fish, what about knowing fish? From Zhuangzi's "Autumn Water in Zhuangzi", it is said that Zhuangzi and Keiko swam on the Baliang, and Zhuangzi said, "It is also a pleasure for fish to swim leisurely." Keiko said, "If you are not a fish, you will know the happiness of fish"? Zhuangzi said, "If I were not a child, would I know the joy of fish?"? Keiko said, "I'm not a son, and I really don't know my son." Children are not fish, children don't know the happiness of fish, everything. "Zhuangzi said," please follow its source ". Confucius said, "You know a lot about fish. "If you know what I know, ask me, I know. According to Keiko, if you are not a fish, you can't know the happiness of the fish; Then, if you are not a horse, you cannot know the happiness of the horse; If it weren't for the wind, we wouldn't know the direction of the wind. If this reasoning goes on, there is nothing to know in the world. Keiko's view is called "agnosticism". "
In fact, our knowledge is limited. Some people can correctly understand objective things, while others can't. But what we can't know for a while in the world will never exist. Although this is the case, it doesn't mean that we are born to know what each other is thinking and what their hobbies are. This requires us to communicate with each other and understand each other.