Combining Texts

You have chosen 'Introductions to Utilitarianism and its Critics' by Jonathan Glover, 'The Same F' by John Perry and 'Building Blocks of Mathematical Logic' by Moses Schnfinkel

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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