Combining Texts

You have chosen 'Nature and Observability of Causal Relations' by Curt Ducasse, 'Objections to 'Meditations' (Fifth)' by Pierre Gassendi and 'Constructibility and Mathematical Existence' by Charles Chihara

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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