This article, focusing on Alejandro Álvarez's Le droit international américain (1910), locates Álvarez in his second home, Paris, within the French sociological/historical school of ‘solidarist’ legal thought. Álvarez's book provides a heroic image of Latin America developing its own regional international law away from the decadent forces of Europe and making significant contributions to international law generally. To tell his story, Álvarez also highlights the dark side of his native continent, in part to sell Álvarez as a practitioner of a bold method. Álvarez adopts racial hierarchy as part of his explanatory model, displaying the tendency of Latin Americans of Spanish descent to identify with and distance themselves from the metropole while separating themselves from the ‘other’. And despite the progressive manifesto rhetoric of the book and its claims for the Latin American role, the substance of Álvarez's international law was ultimately fairly domesticated for his French audience.