Combining Texts

You have chosen 'Logic (Encyclopedia I)' by Georg W.F.Hegel, 'talk' by Michael Lavers and 'Causal Explanation' by David Lewis

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All the ideas for Natural Reality, or select a subheading:
      A. Classical Physics
      B. Modern Physics
      C. Space-Time
      D. Cosmology
      E. Chemistry
      F. Biology