How it is possible to appropriate the European legal legacy for writing a decolonized history of international law ? Is this task possible also for a European legal historian ? Or is he is stucked in his past with his ‘dead white heroes’ ? Assuming an historical perspective, the book intends to answer these questions and tells the history of the paradoxical beginnings of a Western law. It was a new law that was considered the measuring unit of the civilized world and the instrument to reassemble the distinctions between ‘Us and the Others’ that it did not cease to produce.