The previous dream of Zhuang Zhou was a butterfly, lifelike. Self-metaphor and ambition! I don't know, Zhou Ye. If you suddenly feel it, you will suddenly feel it. I wonder if Zhou Zhimeng is a butterfly and? What is the butterfly's dream? This fable tells the story that Zhuangzi realized the unity of everything and me in his dream, broke the boundary between things and me, and reached the real carefree realm. Before the seventh section, I also talked about Zhuangzi's thought that "heaven and earth coexist with me, and everything is one with me". Here, Zhuangzi uses dreams to show that things and I don't distinguish, which is the central idea of Zhuang Zhou's fable "Dream Butterfly". And this chapter I want to talk about is not this, but "knowledge".

Zhuangzi dreamed that he was a butterfly in his dream, and then he felt that he was really a butterfly. Then I woke up and knew that I was Zhuang Zhou, not a butterfly. This is the limitation of "knowledge". In the dream, he thought he was a butterfly because he didn't remember that he was alone. When he woke up, he didn't think he was a butterfly. Things are the same, and different knowledge leads to different conclusions.

There is such a passage in the Theory of Homogeneous Things: Nie Gannu asks you: "Do you know that everything has the same standard?" I hope you say, "How should I know!" "Do you know what you don't know?" How should I know! "So everything can't know? I hope you say, "How should I know! Even so, I still try to say: you ask me a question, how do you know my answer is "know" instead of "don't know"? How do I know that my answer to "I don't know" is not "I know"? Let me ask you: people like to sleep in dry beds, loaches like to sleep in wet soil, and apes like to sleep in tall trees. Who knows the best place to live? People eat animal meat, elk eat grass, and owls like to eat mice. Who knows what tastes best? Beauty lies in beauty, but the bird sees it high and the fish sees it deep. Who knows what real beauty is? This is the limitation of "knowledge".