Abstract
Descartes retains the Aristotelian doctrine that when an agent acts on a patient, the action of the agent is one and the same as the passion in the patient. However, unlike his Aristotelian predecessors who located the agent's action in the patient, Descartes locates the agent's action in the agent. I examine briefly his motives for modifying, but not abandoning this doctrine. My central claim is that his use of this doctrine implies that he thinks there are modes straddling mind and body, but that such straddling modes do not conflict with his dualism, understood properly