Descartes and Malebranche famously argue that the self (or I) is an immaterial thinking substance. But this is only part of the story. Although philosophical reasoning may lead to the conclusion that the self is immaterial, ordinary experience suggests that I am a living human body. My project is to reconstruct Descartes’s and Malebranche’s accounts of our pre-theoretical sense that we are our bodies, and to understand how they reconcile this experience with their dualist metaphysics. Surprisingly, Descartes and Malebranche claim that our experience of embodiment contains an important core of truth. I argue that there is a sense in which our bodies count as parts of ourselves insofar as our mental lives are shaped by our bodies. My project thus puts the body back into the Cartesian self.