The friend above is right, but I will add the philosophical basis. 1, practice determines cognition, which is the basis of cognition. Practice is the source of cognition, the driving force of cognition development, the only criterion for testing the truth of cognition, and the purpose and destination of cognition. This requires us to adhere to the view that practice comes first. The sentence "Read thousands of books and Walk Wan Li Road" itself is the true knowledge drawn by the ancients from practice. 2, knowledge is counterproductive, and truth has a guiding role. This requires us to attach importance to the reaction of cognition and the guiding role of truth, and give full play to them to guide our own practice. 3. The process from practice to understanding, and then from understanding to practice is a wave-like progress or spiral rise. This requires us to know and discover, test and develop the truth in practice, which is our unremitting pursuit and eternal mission. We should use this sentence of the ancients to guide our practice and make our practice conform to this truth.