"Letters on Judaism". Would Stefan Zweig have liked the title of this publication? This great Austrian author helped to build a world in which he would not be reduced to his ancestry, to the religion of his ancestors, to his "Judaism". First anti-Semitism, then National Socialism, made Zweig's cosmopolitan, non-denominational, tolerant utopia fail. The double suicide with his wife in 1942 had precisely this reason: Not wanting to live in a world in which people are killed, expelled, ridiculed and marginalized because they are Jews - whether they see themselves that way or not. But Hitler's perfidious definition of the other had triumphed.