The metaphysics of responsible believing

Contemporary philosophy of mind has tended to make the believer disappear. In response, Matt Boyle and Pamela Hieronymi have argued that believing is an act or activity, not a mental state. I argue that this response fails to fully critique contemporary accounts of believing. Such accounts assume that (i) states of believing are particulars; (ii) with semantic properties; (iii) that we attend to in reflection and act on in inference; and (iv) with a rich causal life of their own. Together, these assumptions leave no room for the believer in an account of believing. But these assumptions are not entailed by the idea that believing is a mental state. Careful reflection on other kinds of states helps us see how to put the believer back in the heart of our account of believing.