All psychoanalysts know Eder's contributions to their science, but it is doubtful whether they know what a dynamic influence Eder was. It is therefore instructive to learn from this series of essays how actively Eder furthered the causes in which he believed. He was a Socialist who powerfully influenced legislation, he was a dispensary worker who provided a model for children's clinics, he was a Zionist who scouted for a promised land in Africa and who went to Palestine after the First World War to help found the Zionist state. He was a man of literary culture who argued psychoanalysis with D. H. Lawrence. And as an analyst, he aggressively carried the battle to the conservative British psychologists and physicians. His early adventures during a revolution in South America and his walk over the Andes supply an O. Henry touch. Glover's essay, which assesses Eder's analytic career, incidentally contains a philosophical and entertaining discussion on how to write a psychoanalytic biography.