Combining Texts

You have chosen 'Upon Nothing: Swansea lecture' by Roger Scruton, 'Sententia on 'De Caelo'' by Thomas Aquinas and 'Syntagma' by Pierre Gassendi

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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