Marx said that practice produces true knowledge. Marx was one of the famous philosophers in19th century. He founded historical materialism and Marxist theory. In his materialist philosophy, practical knowledge accords with the viewpoint of epistemology.
In Marx's epistemology, practice determines cognition, and cognition has a dynamic reaction to practice. Only after the test of practice can the accuracy of truth be determined. In this sentence, true knowledge is the meaning of truth, and correct understanding can be called truth. There are many famous aphorisms that have the same meaning as this sentence, such as "practice is the only criterion for testing truth" and "what a husband hears is not as good as what he sees, what he sees is not as good as what he does, and what he does is not as good as distinguishing by hand".
Relevant understanding
Struggle spirit and ability are not innate and will not naturally improve with age and job promotion. Only when you are sober in theory can you be firm in politics, and only when you struggle can you have confidence and strength. To learn and use Marxism well, we must have the spirit of daring to struggle, not believing in evil, not afraid of ghosts and not being a wimp. Dare to fight, not simply brave and heartless, or blindly confrontation, but both brave and good at fighting.
We should dare to adhere to principles, never give in on matters of principle, make the struggle have a direction and a position, and at the same time, we should talk about the art of struggle, be flexible on strategic issues, and have the mind to shoulder heavy burdens. We should be based on our job responsibilities, be an actor who does things, be an empty talker who just talks but doesn't sit, be a struggler who overcomes difficulties and be a clay idol who is not afraid of wind and rain.