Combining Texts

You have chosen 'Exigency to Exist in Essences' by Gottfried Leibniz, 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz and 'Sameness and Substance' by David Wiggins

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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