The Verge of Philosophy is both an exploration of the limits of philosophy and a memorial for John Sallis s longtime friend and interlocutor Jacques Derrida. The centerpiece of the book is an extended examination of three sites in Derrida s thought: his interpretation of Heidegger regarding the privileging of the question; his account of the Platonic figure of the good; and his interpretation of Plato s discourse on the crucial notion of the chora, the originating space of the universe.Sallis s reflections are given added weight even poignancy by his discussion of his many public and private philosophical conversations with Derrida over the decades of their friendship. This volume thus simultaneously serves to mourn and remember a friend and to push forward the deeply searching discussions that lie at the very heart of that friendship. All of John Sallis s work is essential, but [this book] in particular is remarkable. . . . Sallis shows better than anyone I have ever read what it means to practice philosophy on the verge. Walter Brogan, Villanova University