6. Arthur Schopenhauer

Schopenhauer considered the distinction between appearance and "thing-in-itself" to be Kant's greatest merit; however, he found Kant's remarks on the "thing-in-itself" itself to be completely misguided. This error also gave rise to Schulze's fight against Kant. According to Kant, things in themselves are the external causes of the sensations that occur in our sensory organs. But how do we arrive at the assumption of such causes, asks Schulze and with him Schopenhauer. Cause and effect are connected merely because our organization demands it, and yet are these concepts to be applied to a realm that is beyond our organism? Can the laws of our organism also be decisive beyond it? These considerations led Schopenhauer to seek a different path to the "thing-in-itself" than the one taken by Kant.