Drawing on Heidegger's corpus, the work of historians and biblical specialists, and contemporary philosophers like Levinas and Derrida, Zarader brings to light the evolution of an impens --or unthought thought--that bespeaks a complex debt at the core of Heidegger's hermeneutic ontology. Zarader argues forcefully that in his interpretation of Western thought and culture, Heidegger manages to recognize only two main lines of inheritance:...