Immanuel Kant (April 22, 1724-February 12, 1804) was a German philosopher credited as a founding figure of modern philosophy. In his chief work, Critique of Pure Reason (1781), he discussed the nature and limits of human knowledge. He published other important works on ethics, religion, law, astronomy, and history. Other key works include Critique of Aesthetic Judgement; Fundamental Principles of the Metaphysic of Morals; Science of Right; and The Critique of Practical Reason.