This thesis engages in an interpretative debate over Kant’s general aims in the first Critique. I argue that a defense of the rational legitimacy of religious faith is at the very center of Kant’s Critique of Pure Reason. Moreover, I argue that Kant’s defense of faith is inextricably bound up with his views on the legitimacy of science. On my account, Kant’s Critique not only demonstrates that science is fully consistent with religious faith, but also that science, when properly understood, actually favors religious belief over non-belief.