Combining Texts

You have chosen 'The Character of Physical Law' by Richard P. Feynman, 'De aequopollentia causae et effectus' by Gottfried Leibniz and 'What Does It All Mean?' by Thomas Nagel

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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