In exploring the career of Seki Hajime (1873-1935) who served as mayor of Japan s second-largest city Osaka Jeffrey E. Hanes traces the roots of social progressivism in prewar Japan. Seki trained as a political economist in the late 1890s when Japan was focused single-mindedly on increasing industrial production distinguished himself early on as a people-centered rather than a state-centered national economist. After three years of advanced study in Europe at the turn of the century during which he engaged Marxism and later steeped himself in the exciting new field of social economics Seki was transformed into a progressive. The social reformism of Seki and others had its roots in a transnational fellowship of progressives who shared the belief that civilized nations should be able to forge a middle path between capitalism and socialism. Hanes s sweeping study permits us not only to weave social progressivism into the modern Japanese historical narrative but also to reconceive it as a truly transnational movement whose impact was felt across the Pacific as well as the Atlantic.