Emil Fackenheim's philosophical response to the Holocaust is permeated by the worry that Auschwitz marks a rupture so severe that it compels any attempt to philosophize in its wake either to ignore the magnitude of this rupture or to lose itself in radical nihilism. “Perhaps no thought can exist in the same space as the Holocaust,” Fackenheim writes in To Mend the World. “Perhaps all thought, to assure its own survival, must be elsewhere.”