Combining Texts

You have chosen 'Building Blocks of Mathematical Logic' by Moses Schönfinkel, 'Space, Time and Deity (2 vols)' by Samuel Alexander and 'Letters to Queen Charlotte' by Gottfried Leibniz

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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