Combining Texts

You have chosen 'De rebus naturalibus' by Jacob Zabarella, 'Frege's Distinction of Sense and Reference' by Michael Dummett and 'On Body and Force, Against the Cartesians' by Gottfried Leibniz

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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