The Critique of Practical Reason is a philosophical treatise written by Immanuel Kant a prominent German philosopher of the 18th century. The book is a continuation of Kant s Critique of Pure Reason and explores the nature of practical reason and moral philosophy. Kant argues that practical reason is distinct from theoretical reason which is concerned with knowledge and understanding of the world. Practical reason on the other hand is concerned with moral decision-making and the pursuit of the good. The book is divided into two main parts. The first part examines the foundations of practical reason including the concept of the categorical imperative - a universal moral law that applies to all rational beings. Kant argues that the categorical imperative is the basis for all moral reasoning and that it is derived from the nature of rationality itself. The second part of the book explores the implications of practical reason for human freedom and morality. Kant argues that human beings have free will which allows them to act in accordance with the moral law. He also explores the concept of the highest good which consists of both happiness and moral virtue. Overall The Critique of Practical Reason is a seminal work in the field of moral philosophy and a key text in the history of Western philosophy. It continues to be widely studied and debated by scholars and students of philosophy today.To be an object of practical knowledge as such signifies therefore only the relation of the will to the action by which the object or its opposite would be realized; and to decide whether something is an object of pure practical reason or not is only to discern the possibility or impossibility of willing the action by which if we had the required power (about which experience must decide) a certain object would be realized.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important we have made it available as part of our commitment for protecting preserving and promoting the world s literature in affordable high quality modern editions that are true to their original work.