The duty of memory. "Remember, this was, no, do not forget it." Primo Levi implores us, we beseech. We orders. This text is the story of who survived a lager (concentration camp and extermination). But why, after all, should we take the time to read these testimonies, few of the horror of the Second World War? Why not instead think the sun shines today, or what is going to eat tonight? Because this story is unique. Unique because everyone has crossed Primo Levi died. It is the only voice of those who have not had the chance to live out these death camps. It is their voice at all, and we must listen. A insipensable story.