Combining Texts

You have chosen 'The Inference to the Best Explanation' by Gilbert Harman, 'Letters to Pierre Bayle' by Gottfried Leibniz and 'Mathematical logic and theory of types' by Bertrand Russell

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All the ideas for Reason, or select a subheading:
      A. Nature of Reason
      B. Laws of Thought
      C. Styles of Reason
      D. Definition
      E. Argument
      F. Fallacies