During the ensuing pedagogical revolution, Hasidic yeshivas soon overshadowed courts, and Hasidic leaders became known more for scholarship than miracle-working. By mobilizing Torah study, Hasidic leaders were able to subvert the "civilizing" projects of the Polish state, successfully rival Zionists and Socialists, and create clandestine yeshiva bunkers in ghettos during the Holocaust. Torah study was thus not only a spiritual-intellectual endeavor but a political practice that fueled a formidable culture of resistance. The Light of Learning belies notions of late Hasidic decadence and decline and transforms our understanding of Polish Jewry during its final hour.