Combining Texts

You have chosen 'Elements of Mind' by Tim Crane, 'Is Mathematics purely Linguistic?' by Bertrand Russell and 'The Nature of Existence vol.2' by J.M.E. McTaggart

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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