Combining Texts

You have chosen 'Letters to Wagner' by Gottfried Leibniz, 'Democracy in America (abr Renshaw)' by Alexis de Tocqueville and 'Structure of Scientific Revolutions (2nd ed)' by Thomas S. Kuhn

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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