Combining Texts

You have chosen 'What do powers do when they are not manifested?' by Stathis Psillos, 'The Realm of Matter' by George Santayana and 'The Sceptical Chemist' by Robert Boyle

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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