Combining Texts

You have chosen 'Introduction to the Theory of Logic' by José L. Zalabardo, 'Relativism' by Paul O'Grady and 'An Analysis of Knowledge and Valuation' by C.I. Lewis

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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