Philosophical principle of applying what you have learned.

Four philosophical principles of applying what you have learned.

First, the principle of China's traditional pragmatic philosophy: the utilitarian principle. That is, what you learn must have the effect of serving the needs of society.

Second, the principle of American pragmatism philosophy: usefulness is the principle of truth. That is, what you have learned is a tool to serve mankind.

Third, the principle of Aristotle's philosophy: the principle of interpretation. That is, what you have learned is the ultimate explanation of the world or everything.

Fourth, the principle of Popper's philosophy: the principle of conjecture and refutation. That is to use what you have learned to explain the world and serve mankind (a conjecture that has not been refuted so far).

Short answer, for reference only.