Combining Texts

You have chosen 'Killing and Letting Die' by Philippa Foot, 'De modo distinguendi phaenomena' by Gottfried Leibniz and 'Recent Aesthetics in England and America' by Roger Scruton

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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