Every few decades a book is published that shapes Jewish consciousness. One thinks of Wiesel's Night or Levi's Survival in Auschwitz. But in 1927, years before these works were written, Joseph Roth (1894-1939) composed The Wandering Jews. In these stunning dispatches written when Roth was a correspondent in Berlin during the whirlwind period of Weimar Germany, he warned of the false comforts of Jewish assimilation, laid bare the schism between Eastern...