Affection occupies a liminal position in the depth-psychology corpus, standing between the rawness of passion and the structured reciprocity of friendship, between bodily impulse and cognitive appraisal. Aristotle, as mediated through Konstan and Nussbaum, provides the canonical ancient scaffolding: affection (philia / to philein) is neither mere feeling nor pure benevolence but a state with both emotional and relational requirements—wishing good things for another for that person’s own sake, manifesting in action. The Stoic tradition complicates this by defining every affection as an impulse arising from intellectual misjudgement, thereby importing a voluntarist dimension largely absent from Peripatetic analysis. Simondon’s phenomenological contribution is structurally distinct: affection is emotion in slow motion, lacking the integrative unity and self-sustaining momentum of full emotion, registered instead as a diffuse belonging to one of the living being’s modes of becoming. In the psychoanalytic and attachment lineages, affection appears as a currency of relational regulation—what Flores frames as the healthy need for confirmation, easily perverted into codependent approval-seeking. James and the mystical-religious strand treat affection as a fruit of grace, continuous with cosmic charity. Across these lineages, the key tension is whether affection is primarily cognitive, conative, or somatic, and whether mutuality is constitutive of it or merely its ideal completion.