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• "Categorical imperative" philosopher
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• Categorical imperative philosopher
• 'Critique of Pure Reason' philosopher
• 18th-c. German philosopher Immanuel
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• ''Critique of Pure Reason'' writer
• "Critique of Pure Reason" philosopher Immanuel
• 'Critique of Pure Reason' philosopher Immanuel
• Philosopher who was a pioneer of German idealism
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• "Critique of Pure Reason" philosopher
• "Critique of Practical Reason" author
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