A key point to grasp in many of the issues raised by Anomalous Monism is that there is an important distinction between action and behavior. According to Davidson, action is intentionally described behavior—the moving of a hand through space in a certain way may, but need not, be an action of waving or swatting or any action at all. It may simply be mere bodily behavior—as happens as the result of a muscle twitch or a strong gust of wind. The behavior must be caused by an agent’s beliefs and des