How to Combine Epistemic and Practical Reason

This paper offers a theory of how epistemic and practical reasons for belief can be combined into all-things-considered reason. Unlike alternative theories, it does not involve any sharp cut-offs or lexical priorities among types of reason. The theory allows that the relative strengths of the practical and epistemic reasons matter, as does the distance between the epistemically rational credence and the practically rational credence. Although there are important differences between the structure of epistemic and practical reason, they can still be combined in a satisfactory way. The central idea is that epistemic reason determines an epistemically rational doxastic state, and practical reason can push it around.