Mutuality occupies a pivotal position in the depth-psychology corpus, functioning simultaneously as a clinical concept, an ethical category, and a metaphysical aspiration. Its valences range from Ferenczi’s radical clinical experiment — mutual analysis, wherein analyst and analysand exchange roles in a controlled reciprocity — to Ricoeur’s philosophical insistence that genuine friendship (philia) is constitutively structured by the condition that each loves the other ‘as being the man he is,’ a formulation that refuses both Husserlian derivation from the Same and Lévinasian derivation from the Other. Kurtz and Ketcham draw mutuality into the terrain of spiritual recovery, locating it in the L’Arche community’s discovery that the broken can heal the intact — a therapeutic circularity that underpins Twelve Step spirituality. Flores situates it squarely within attachment theory and addiction treatment, arguing that substance abusers characteristically lack the developmental capacity to recognize the other as different, separate, and equal, making mutuality both a clinical goal and a measure of psychological maturation. Victor Turner recovers Buber’s formulation — ‘the irrefragable genuineness of mutuality’ — as the experiential core of communitas. Aurobindo invokes it cosmologically, as the relational basis of collective evolution. Across these registers, a central tension persists: whether mutuality is primarily a condition of equality achieved through reciprocal exchange, or a dynamic that must traverse, and thereby transform, an original asymmetry.