During the 1930s the Vienna-born writer Emil Alphons Rheinhardt (1889-1945) lived in the town of Le Lavandou in the South France, where he made his house a hospitable meeting place for German-speaking literary exiles. In 1943, during the German occupation of France, Rheinhardt was arrested and then in 1944 deported to Dachau concentration camp, where he died shortly before the liberation. A few years ago the historian Dominique Lassaigne discovered his prison diary, which had been believed lost. Rheinhardt's notes from the Gestapo prisons bear witness to a long-forgotten humanist who believed in the peacemaking power of culture.