Combining Texts

You have chosen 'The Character of Physical Law' by Richard P. Feynman, 'The Unimportance of Identity' by Derek Parfit and 'Grounding Concepts' by Carrie Jenkins

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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