Knowledge comes from practice and comes back to guide action

Movement of knowledge will complete one round when it comes back to Practice. It is dialectical.
Truth is withdrawn outward not inward.

I concern about Truth. That is what decide the matter not opinion. What I wanna know is Truth not ur opinion.
Opinion could reflect Truth but not always.
Theory of knowledge.

Concern about the Truth.
What can guide the Action? Truth.
Knowledge about the Truth.