Combining Texts

You have chosen 'Queries to the 'Opticks'' by Isaac Newton, 'On the Foundations of Logic and Arithmetic' by David Hilbert and 'Causality and Properties' by Sydney Shoemaker

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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