Emil Ludwig (originally named Emil Cohn) was born in Breslau, now part of Poland. Born into a Jewish family, he was raised as a non-Jew but was not baptized. "Many persons have become Jews since Hitler," he said. "I have been a Jew since the murder of Walther Rathenau [in 1922], from which date I have emphasized that I am a Jew."[2][3] Ludwig studied law but chose writing as a career. At first he wrote plays and novellas, also working as a journalist. In 1906, he moved to Switzerland, but, during World War I, he worked as a foreign correspondent for the Berliner Tageblatt in Vienna and Istanbul. He became a Swiss citizen in 1932, later emigrating to the United States in 1940.
