Combining Texts

You have chosen 'The philosophical basis of intuitionist logic' by Michael Dummett, 'Quantification and Descriptions' by Bernard Linsky and 'Exigency to Exist in Essences' by Gottfried Leibniz

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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