Combining Texts

You have chosen 'What is Logic?st1=Ian Hacking' by , 'An Essay in Aesthetics' by Roger Fry and 'What is Justified Belief?' by Alvin I. Goldman

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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