Jackson, Liz2022-09-281460-2113http://hdl.handle.net/1885/274145I examine three attitudes: belief, faith, and hope. I argue that all three attitudes play the same role in rationalizing action. First, I explain two models of rational action - the decision-theory model and the belief-desire model. Both models entail there are two components of rational action: an epistemic component and a conative component. Then, using this framework, I show how belief, faith, and hope that p can all make it rational to accept, or act as if, p. I conclude by showing how my picture can explain how action-oriented commitments can be rational over time, both in the face of counterevidence and in the face of waning affections.application/pdfen-AU© 2020 Jackson2020-06-1310.1093/mind/fzaa0232021-11-28