Combining Texts

You have chosen 'A Discourse on Method' by René Descartes, 'The Actual and the Possible' by Alexander R. Pruss and 'Frege's Theory of Numbers' by Charles Parsons

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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