Combining Texts

You have chosen 'Letters to Remond de Montmort' by Gottfried Leibniz, 'The Universe as We Find It' by John Heil and 'The Approach to Metaphysics' by Charles Sanders Peirce

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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