"The Verge of Philosophy" is both an exploration of the limits of philosophy and a memorial for John Sallis' 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' 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 lay at the very heart of that friendship.