The word "learning from the scriptures" comes from "university". Knowing knowledge from things is a very important philosophical concept of Confucianism. In the Northern Song Dynasty, Zhu said: "The governor wants to do what I know, but he is poor at what he knows." This is Zhu's most general and accurate expression of "teacher".
The way to know things and do things.
"Wu Ge" is something like a grindstone. First of all, we grind things like heart, thought, intention and desire off the stone with our heart. This is the so-called process of "seeing things by myself", but in the end, Wu Ge will get rid of this state and achieve "seeing things by things", and things are what they seem. There is something, and there is nothing.
For another example, objects are like clocks, and knowledge is like listening to clocks. "Wu Ge" is a matter, we should work hard to do it, but "knowledge" is not a matter, so it will come naturally.
So, to put it simply, I use my knowledge to analyze and judge people and things around me. In the current words, it is to establish a perfect three views. To know is to know the "sincerity" of distinguishing between true and false, and at the same time, to know yourself better and find your position better in contact with others and things.
Then you can be sincere, that is, you really haven't deceived yourself. Secondly, we can be upright, that is, there are no illusions and fantasies in our hearts. Finally, you can cultivate your self-cultivation and be a virtuous person.