This author asked, "Can metaphysics even be possible?" in his Prolegomena to Any Future Metaphysics.
This author asked, "Can metaphysics even be possible?" in his Prolegomena to Any Future Metaphysics. He also wrote a work that examines the four causes of ethical action and a supplement to that work was titled "On the Supposed Right to Tell Lies from Benevolent Motives." Arguing for an a priori basis for morality, that work, Groundwork of the Metaphysics of Morals, also examines a concept that calls for each moral action to be universally true in all situations. FTP, name this eighteenth century Idealist who wrote Critique of Pure Reason and developed the concept of the categorical imperative.
This author asked, "Can metaphysics even be possible?" in his Prolegomena to Any Future Metaphysics.
Immanuel Kant