Atman is the self that remains when everything you are not has been removed. Not the ego, not the personality, not the body — the witness behind all experience. The Mandukya Upanishad maps it through four states: waking, dreaming, deep sleep, and turiya (the fourth, beyond all states). Hex 52 (Keeping Still) is the mountain at rest — doubled stillness, the body and mind both quieted so that what remains can be perceived. Hex 61 (Inner Truth) is the hollow center, the emptiness within that allows resonance. The great equation of Advaita Vedanta — Atman is Brahman, the individual self is the universal self — finds no direct I-Ching equivalent. But the structural implication is there: Hex 52 (stillness within stillness) arrives at the same place as Hex 1 (creative force within creative force). The extremes touch.