Combining Texts

You have chosen 'Mind and Its Place in Nature' by C.D. Broad, 'Il Saggiatore ('The Assayer')' by Galileo Galilei and 'Modal Logic' by Max J. Cresswell

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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