Immanuel Kant
Kant developed his moral philosophy in three works: "Groundwork of the Metaphysic of Morals" (1785), "Critique of Practical Reason" (1788), and "Metaphysics of Morals" (1797).
Sublime (philosophy)
Immanuel Kant, in 1764, made an attempt to record his thoughts on the observing subject's mental state in "Observations on the Feeling of the Beautiful and Sublime". He held that the sublime was of three kinds: the noble, the splendid, and the terrifying.