“Leibniz’s theory on the subject as substantia ideans in the sense of a causative agent of decision and acts stands much closer to a materialist interpretation of history than does a philosophy which reduces the thinking subject to the role of subsuming protocol sentences under general propositions and deducing other sentences from them.”

—  Max Horkheimer

Source: "The Latest Attack on Metaphysics" (1937), p. 149.

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Max Horkheimer 61
German philosopher and sociologist 1895–1973

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