Combining Texts

You have chosen 'The Boundary Stones of Thought' by Ian Rumfitt, 'Letter to Frege 29.12.1899' by David Hilbert and 'Elucidation of some points in E.Schrder' by Gottlob Frege

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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