Avishai Margalit raises questions about how memory can be a moral and an ethical concern, and in this commentary on “Nostalgia,” Aron expands on these themes and examines the place of memory in psychoanalysis and in Judaism. The study of memory and of mind are inseparable. At its best, psychoanalysis does not contrast thoughts and actions, inner and outer, memory and motor action, intrapsychic mental life and interpersonal external behavior as simple dichotomous terms but rather views these as mutually defining transformations, different views of a single complex reality. Conceived in this way, memory is not a static internal picture, but rather is continually constructed, embedded in our interpersonal context. It is living memory.