Combining Texts

You have chosen 'New system of communication of substances' by Gottfried Leibniz, 'On Eternal and Immutable Morality' by Ralph Cudworth and 'Quantification and Descriptions' by Bernard Linsky

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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