Combining Texts

You have chosen 'Reply to 'Rorarius' 2nd ed' by Gottfried Leibniz, 'Letters to Remond de Montmort' by Gottfried Leibniz and 'Sameness and Substance Renewed' by David Wiggins

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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