The Critique of Practical Reason is the second of Immanuel Kant's three critiques, first published in 1788. It follows on from Kant's Critique of Pure Reason and deals with his moral philosophy. The... More > second Critique exercised a decisive influence over the subsequent development of the field of ethics and moral philosophy, beginning with Fichte's Doctrine of Science and becoming, during the 20th century, the principal reference point for deontological moral philosophy.< Less
The Metaphysics of Morals is a 1797 work of political and moral philosophy by Immanuel Kant.
The work is divided into two main parts, the Rechtslehre and the Tugendlehre. Mary Gregor's translation... More > explains these German terms as, respectively, "The Doctrine of Right, which deals with the rights that people have or can acquire, and the Doctrine of Virtue, which deals with the virtues they ought to acquire."
The Doctrine of Virtue develops further Kant's ethical theory, which Kant first laid out in the Groundwork of the Metaphysics of Morals. Kant particularly emphasizes treating humanity as an end in itself.< Less