Combining Texts

You have chosen 'History of the Concept of Time' by Martin Heidegger, 'Frege on Extensions from Concepts' by Tyler Burge and 'Letters to Samuel Masson' 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