This book presents the ethical thought of Emmanuel Levinas as the moral completion of Cartesianism. It begins by presenting Descartes' views on mind and body and the relationship between them in light of the question of how consciousness relates to a world beyond it. Secondly, it presents a complete sketch of Levinas' ethical metaphysics showing how Levinas adopts many elements of Descartes' philosophy, including the idea of infinity and a philosophy of sensibility, and uses them to push Cartesianism to its moral conclusions.