Combining Texts

You have chosen 'Ancient Thought in Modern Physics' by Werner Heisenberg, 'The Laws of Thought' by George Boole and 'Naming and Necessity lectures' by Saul A. Kripke

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All the ideas for Natural Theory, or select a subheading:
      A. Speculations on Nature
      B. Natural Kinds
      C. Causation
      D. Laws of Nature