Acharya Prashant addresses a question about the relationship between immortality, deathlessness, and knowing the Self (Atma) as the container of the world. He clarifies that 'container' is not the right concept, as it implies a boundary. A better metaphor is the 'sky.' Everything happens within the sky, but the sky is not just a boundary; it is also the very substance that enables everything to happen. Unlike a physical container holding things distinct from itself, everything within the sky is made of 'skyness.' He connects this to atomic physics, noting that over 99% of an atom is empty space. He further elaborates that even the seemingly solid particles are ultimately just 'sky.' Material, as we perceive it, does not truly exist; what exists are fields within the sky. Therefore, all that truly is, is the sky and its function, which he calls 'skyness.' The Upanishads advise to 'know this and keep all your junk aside.' This 'junk' refers to all dualistic thoughts of 'this and that,' birth and death, and personal ambitions. When one realizes there is only the sky and 'skyness,' with no separate 'you' or 'me,' one becomes immortal. Acharya Prashant explains that the life we ordinarily live is inseparable from death; 'alive' is defined as 'not yet dead.' This life is powered by the center of death, the ego. Therefore, immortality is not just freedom from death, but freedom from this mortal, ego-driven life. When the ego-center is dislodged, both life (as we know it) and death disappear. Immortality is possible only when the personal self is discarded. What we call 'life' is actually 'active death'—death in motion, energized by the center of death within us. To be free from death, one must be free from the life that runs from the point of death.