Combining Texts

You have chosen 'Classical Cosmology (frags)' by T.M. Robinson, 'The Later Works (17 vols, ed Boydston)' by John Dewey and 'Letters to Oldenburg' by Baruch de Spinoza

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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