Combining Texts

You have chosen 'Dissoi Logoi - on Double Arguments' by Anon (Diss), '02: Gospel of St Mark' by St Mark and 'Morals and Modals' by Simon Blackburn

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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