Combining Texts

You have chosen 'Conspectus libelli (book outline)' by Gottfried Leibniz, 'Improvement of Understanding' by Baruch de Spinoza and 'Conditional Assertion and Restricted Quantification' by Nuel D. Belnap

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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