This author of Groundwork for the Metaphysics of Morals distinguished between a priori and a posteriori knowledge.
This thinker compared rational religion to a naked body in Religion within the Bounds of Bare Reason, and discussed pure and mixed ratiocination in The False Subtlety of the Four Syllogistic Figures. He gave "emergence from self-incurred immaturity" as the answer to the title question in "What is Enlightenment?" This author of Groundwork for the Metaphysics of Morals distinguished between a priori and a posteriori knowledge. For 10 points, name this German formulator of the categorical imperative and author of Critique of Pure Reason.
This thinker compared rational religion to a naked body in Religion within the Bounds of Bare Reason, and discussed pure and mixed ratiocination in The False Subtlety of the Four Syllogistic Figures.
Immanuel Kant