Combining Texts

You have chosen 'A Problem about Substitutional Quantification?st1=Saul A. Kripke' by , 'The World' by Ren Descartes and 'fragments/reports' by Lycophron

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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