The contributions of Anscombe and Davidson have established a standard conception of action, and Davidson’s work has provided the groundwork for a standard theory of action. At the core of the standard conception are the following two claims. First, the notion of intentional action is more fundamental than the notion of action. In particular, action is to be explained in terms of the intentionality of intentional action. Second, there is a close connection between intentional action and acting for a reason.