Combining Texts

You have chosen 'Letters to Paul Pellison-Fontinier' by Gottfried Leibniz, '02: Gospel of St Mark' by St Mark and 'Metaphysics of Morals I: Doctrine of Right' by Immanuel Kant

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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