Combining Texts

You have chosen 'Intros to 'Buddhist Scriptures'' by Edward Conze, 'What is Logic?' by Ian Hacking and 'Launching Points to the Realm of the Mind' by Porphyry

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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