 Broadly speaking, the scholarship offers two ways of interpreting Hume’s compatibilism. According to the most common approach, Hume’s arguments concern the logic of the concepts at issue. On this reading, Hume analyzes the concepts of liberty and necessity to show that, properly understood, they do not conflict. We can be rationally justified in holding a person responsible for her action even though all human actions are caused. The only question is whether she, rather than some other person or external force, is the cause of her action. According to Paul Russell’s naturalist approach, however, Hume’s view is not primarily a piece of a priori reasoning about the logic of our concepts or the rational justification of attributions of moral responsibility. Above all it is an empirical explanation for why we sometimes feel that people are responsible for their conduct. Hume’s concern is with the cognitive processes that cause such attributions (Russell 1995: ch. 4). He starts with the occasions in common life when we hold people responsible for their behavior, and then asks, what happens in the mind on such occasions? On the standard reading, Hume’s treatment of liberty is a fairly self-contained set of compatibilist arguments, quite detachable from his larger project. On the naturalist reading, it is deeply connected to his theory of the passions and moral judgment, which makes it an integral part of his “science of man.”