Acharya Prashant explains that knowing oneself is the foundation for understanding the world, as the self is the knower through which all external things are perceived. He clarifies that the self is not a mystical concept but is present in every action, thought, and physical movement occurring in the present moment. To know the self, one does not need a complex method or path; rather, it requires simple, conscious observation of one's own reactions, behaviors, and mental states. He points out that while modern education focuses entirely on external subjects like history, geography, and science, it neglects the most important aspect: the knower. He emphasizes that without understanding how the mind functions and observing the collector of knowledge, all external knowledge remains superficial. By maintaining awareness and keeping one's eyes open to the internal universe, the nature of the self becomes apparent.