Critique of Practical Reason

The Critique of Practical Reason (Kritik der praktischen Vernunft), published in 1788 by Immanuel Kant, is the second of his three critiques. It expands upon his moral philosophy introduced in the Critique of Pure Reason and is foundational to deontological ethics, which emphasizes the inherent rightness or wrongness of actions rather than their consequences. This work significantly influenced the development of ethical systems and established the concept of moral absolutism, asserting that certain actions are universally right or wrong regardless of context.