Get knowledge by studying the principle of things. It is one of the important propositions of China's ancient epistemology. Language "Book of Rites University": "If you want to be sincere, you will be a prophet, and you will know its body." Zheng Xuan's note: "Ge, come also; Things or things. Knowing what is good will bring good things; If he knows evil well, evil will come; It is said that birds of a feather flock together and people flock together, which is the best. "

Modern Chinese Dictionary is interpreted as: studying the principles and laws of things and summarizing them into rational knowledge. The word "learning from things" comes from "university". Grid, to also. Things or things. Go, go putter, get to know, get to know. Knowing knowledge from things is a very important philosophical concept of Confucianism. In the Northern Song Dynasty, Zhu thought: "A governor wants to do what I know, but he is poor in what he knows." This is the most general and accurate expression of Zhu's "knowing people from things". Push your knowledge to the extreme and want to know everything. I am so poor that I want to be everywhere. As for Zhu's explanation, our understanding is that "materialism" means "materialism", and everything should be understood and explored. To know is to be a real wise man and never be careless in doing things.