Combining Texts

You have chosen 'Letter to G.H. Schaller' by Baruch de Spinoza, 'The Elm and the Expert' by Jerry A. Fodor and 'The Ultimate Constituents of Matter' by Bertrand Russell

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All the ideas for Natural Reality, or select a subheading:
      A. Classical Physics
      B. Modern Physics
      C. Space
      D. Time
      E. Cosmology
      F. Chemistry
      G. Biology