Combining Texts

You have chosen 'Why coherence is not enough' by James Van Cleve, 'Elements of Mathematical Logic' by Jan Lukasiewicz and 'Two letters on mind' by Ren Descartes

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All the ideas for Thought, or select a subheading:
      A. Modes of Thought
      B. Mechanics of Thought
      C. Content
      D. Concepts
      E. Abstraction