Dr. Nathaniel J. London died on October 10, 1989. Psychoanalytic Inquiry lost one of its most valued and productive editors, and I lost a cherished friend and fraternity brother from college days. Death does not “become” a person as full of life, of ideas and enthusiasm as Nat. Nat cared a lot about a lot of things—his family, psychoanalysis, his creative output, and, as a writer, choosing just the right word. Two of his contributions are, I believe, pivotal points in orienting psychoanalytic thinking: his explication of two theories of schizophrenia in “An Essay on Psychoanalytic Theory” (1973, Int. J. Psychoanal., 54: 169-193), the link between play and the transference neurosis in “The Play Element of Regression in the Psychoanalytic Process” (1981, Psychoanal. Inq., 1: 7-28). At the time of his death, Nat was considering editing an issue of Psychoanalytic Inquiry on play and humor—a topic most befitting our memory of him.