Combining Texts

You have chosen 'Function and Concept' by Gottlob Frege, 'Structure of Scientific Revolutions (2nd ed)' by Thomas S. Kuhn and 'Il Saggiatore ('The Assayer')' by Galileo Galilei

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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