Combining Texts

You have chosen 'works (all lost)' by Aristippus the elder, 'Papers of 1918' by Bertrand Russell and 'What is the Source of Knowledge of Modal Truths?' by E.J. Lowe

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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