This article suggests that Weber’s cosmopolitandimension has much to do with his extended family history,which has been relatively neglected even though it influencedhis world view and oeuvre in significant respects. It first sketchesthe cosmopolitan family context and then turns to Weber’spolitical and scholarly agenda, especially the little-known storyof his strong political and professional engagement in the battleover exchange reform in the eighteen-nineties.L’auteur suggère que la dimension cosmopolite de Weber estassociée à son histoire familiale, qui a été relativement negligée malgrél’influence significative qu’elle eut sur sa vision du monde et son oeuvre.Premièrement, l’article trace le contexte familiale cosmopolite; ensuiteil se penche sur l’agenda politique et académique de Weber,particulièrement l’histoire méconnue de son engagement politique etprofessionnel dans la bataille pour la réforme du change dans les années90 du XIX siècle.O autor sugere que a dimensão cosmopolita de Weber estáassociada à sua história familiar, que tem sido relativamentenegligenciada embora tenha influenciado sua visão de mundo e suaobra em aspectos significativos. Na primeira parte, esboça o contextofamiliar cosmopolita, e depois examina a agenda política e acadêmicade Weber, particularmente a história pouco conhecida de seuenvolvimento político e profissional na batalha pela reforma cambialnos anos 90 do século XIX
