Complex sentence: Kant's major work, the "Critique of Pure Reason" ("Kritik der reinen Vernunft", 1781), aimed to bring reason together with experience and to move beyond what he took to be failures of traditional philosophy and metaphysics.
Split into simpler sentences: Kant's major work, the "Critique of Pure Reason" ("Kritik der reinen Vernunft", 1781), aimed to explain the relationship between reason and human experience. With this project, he hoped to move beyond what he took to be failures of traditional philosophy and metaphysics.