Nothingness occupies a peculiar and generative position across the depth-psychology corpus: it is never merely the absence of something, but rather a charged ontological ground from which being, consciousness, and psychological transformation may emerge. The corpus registers at least four distinct valences. In the Buddhist and Taoist streams, Nothingness (śūnyatā, wu, sunyata) is construed as the very medium of liberation — not nihilism but the silent substrate that permits things to ‘be as they are.’ Aurobindo and the Vedantic tradition complicate this by arguing that a philosophic ‘zero’ is in fact a plenum, an indefinable Infinite that mind misreads as vacancy. Heidegger’s formulation, relayed most forcefully by McGilchrist, insists that Nothingness ‘noths’ — it is an active ontological agent, not passive negation. The Sufi tradition as read through Vaughan-Lee recasts Nothingness as the telos of annihilation (fanā), the realized emptiness of the self before the divine. Schopenhauer, via Sharpe and Ure, presents the ascetic’s transition into ‘empty nothing’ as redemptive precisely because it negates the world of willing. The clinical register, represented by Yalom, treats Nothingness as an existential anxiety-generator — the groundlessness encountered in isolation and confrontation with finitude. The through-line is paradox: Nothingness functions, creates, and transforms; it is, as Eckhart says via McGilchrist, ‘simultaneously total emptiness and supreme fullness.’