Eternal optimism in the face of hopeless odds — faith in the power of the few — is an idea that goes right to the heart of Chanukah One of the great unheralded heroes of the Holocaust was Rabbi Avraham Grodzinsky, the spiritual leader of the Kovno ghetto. Until the outbreak of the war, he had been the Rosh Yeshiva of the famed Slabodka Yeshiva and was one of the leading sages of his generation. He had entered the yeshiva at the age of 17, and, under the tutelage of the legendary Rabbi Nosson Tzvi Finkel, the “Alter of Slabodka,”...