Combining Texts

You have chosen 'A Dictionary of Philosophy' by A.R. Lacey, 'The Logical Syntax of Language' by Rudolph Carnap and 'Leibniz' by Richard T.W. Arthur

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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