1. Action is the beginning of cognition, and cognition is the result of action, which means that practice is the necessary way to acquire cognition, and only practice can produce real cognition. This paper expounds the relationship between practice and cognition, that is, the unity of knowledge and action. Practice is the beginning of knowledge, and knowledge is the sublimation of practice.

2. From the article "Journey" published by Tao Xingzhi in Life Education at the age of 43, he thinks that cognition can come from practice, but it can never replace practice. It embodies his attitude of learning from society and practice, and also contains his materialist philosophy, that is, knowledge comes from practice and practice is the foundation of knowledge.