The Critique of Practical Reason (Kritik der praktischen Vernunft) is the second of Immanuel Kant’s three critiques, first published in 1788. It follows on from his Critique of Pure Reason and deals with his moral philosophy. The second Critique exercised a decisive influence over the subsequent development of the field of ethics and moral philosophy, becoming the principle reference point for ethical systems that focus on the rightness or wrongness of actions themselves, as opposed to the r ...

Immanuel Kant wrote extensively on all major topics of intellectual interest. In terms of the publication of major texts his most prolific period was 1781 to 1790. In the domains of epistemology and metaphysics he published the Critique of Pure Reason in 1781. In the domain of ethics he published the Groundwork of the Metaphysics of Morals in 1785 and the Critique of Practical Reason in 1788. In the domain of aesthetics he presented his theory in 1790 in the form of the Critique of Judgment. ...