Combining Texts

You have chosen 'The Character of Physical Law' by Richard P. Feynman, 'Naming and Necessity notes and addenda' by Saul A. Kripke and 'Letters to Coste' by Gottfried Leibniz

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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