 Malebranche is known for his occasionalism, that is, his doctrine that God is the only causal agent, and that creatures merely provide the “occasion” for divine action. On the old textbook account, occasionalism was an ad hoc response to the purported problem in Descartes of how substances as distinct in nature as mind and body are can causally interact (see, for instance, Copleston 1958, 176, and Keeling 1968, 224). According to this account, Malebranche was driven by this problem with Cartesian dualism to propose that it is God who brings it about that our sensations and volitions are correlated with motions in our body.