Object destruction, as treated across the depth-psychological corpus, is not primarily a clinical pathology but a developmental and ontological necessity. The term achieves its most precise theoretical elaboration in Winnicott’s late work, where the destruction of the object by the subject is the very mechanism through which the object is placed outside the self and becomes genuinely ‘other’—no longer a projection but an entity belonging to shared reality. The survival of this destruction by the object is what makes authentic object-use, as distinct from mere object-relating, possible. Kalsched draws on this formulation to locate the ‘moment of destruction’ as a pivotal threshold in the emergence of depth and binocular vision in the psyche, comparing it with Klein’s depressive position and Jung’s ego sacrifice. Lacan approaches the same territory from a different angle, examining how the destructive instinct (Thanatos) paradoxically creates and eternalizes the object by reducing it to formal residue. Klein, for her part, emphasizes the earliest oral-destructive fantasies directed at the breast as the foundational matrix of persecutory anxiety and, ultimately, of reparation. Neumann situates destruction within the phylogenetic emergence of ego-consciousness itself, arguing that aggression, dismemberment, and assimilation are indispensable to the differentiation of world from self. Lacan, Abraham, and Hillman each extend this nexus, variously connecting object destruction to the anal-sadistic register, to soul-making, and to the imaginal dissolution that precedes genuine psychological transformation.