This paper examines Grounding for the Metaphysics of Morals by Immanuel Kant. Specifically, it answers two questions:
1) Why does Kant distinguish respect from all other feelings; and
2) How is the feeling respect central to Kant's claim that pure, or a priori reason is the source for the "supreme principle of morality." The paper asserts that Kant must distinguish respect from other feelings to show that it is the only a priori feeling; and thus central to his claim as the only feeling from which morality may derive.