Combining Texts

You have chosen 'On Forms (frags)' by Democritus, '75: Is 'Live Unknown' a Wise Precept?' by Plutarch and 'Proof of an External World' by G.E. Moore

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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