One of the most significant philosophical works of the twentieth century, Contributions to Philosophy is also one of the most difficult. Parvis Emad, in this collection of interpretive and critical essays, unravels and clarifies this challenging work with a rare depth and originality. In addition to grappling with other commentaries on Heidegger, he highlights Heidegger's "being-historical thinking" as thinking that sheds new light on theological, technological, and scientific interpretations of reality. At the crux of Emad's interpretation is his elucidation of the issue of "the turning" in Heidegger's thought and his "enactment" of Heidegger's thinking. He finds that only when Heidegger's work is enacted is his thinking truly revealed.