W. v Humboldt on Kant vs Jacobi, 1789

"A year later, in October 1789, [Wilhelm von] Humboldt writes that the arguments of [Christian] Wolff have collapsed and 'Kant is the king of the castle.' In fact, the philosophies of Kant and Jacobi were opposed to each other. Kant relied on the intellect and reason to direct men to moral action and Jacobi relied on intuition. Humboldt came to see that Jacobi's system was entirely different from Kant's, and for Humboldt both were inadequate. Kant was too rationalistic, too abstract, placing reliance on a priori reason divorced from the world of sense; Jacobi placed too much reliance on unverifiable feelings with the consequent difficulty of distinguishing truth from delusion."

-- Wilhelm von Humboldt and German Liberalism, A Reassessment, John Roberts, 2009, p. 3.