Despite several surprising similarities, Kant and Hume clearly disagree on the basic question of whether pure reason, to use Kant’s expression, can be motivationally efficacious. Kant thinks it can, while Hume does not. However, one must interpret this disagreement with care. First, Kant’s account of respect makes clear that feeling or emotion is involved even when pure reason motivates action. The “affectivist” interpretation of respect, in particular, suggests that Kant and Hume may agree that