Combining Texts

You have chosen 'The Courtier and the Heretic' by Matthew Stewart, 'Ideas: intro to pure phenomenology' by Edmund Husserl and 'Building Blocks of Mathematical Logic' by Moses Schnfinkel

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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