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The Critique of Pure Reason (Kritik der reinen Vernunft), first published in 1781 with a second edition in 1787, is generally regarded as the most influential and widely read work of the German philosopher Immanuel Kant and one of the most influential and important in the history of Western philosophy. It is often referred to as Kant's "first critique," and was followed by the Critique of Practical Reason and the Critique of Judgement.