Combining Texts

You have chosen 'Homeostasis, Species and Higher Taxa' by Richard Boyd, 'Answer to 'What is Enlightenment?'' by Immanuel Kant and 'A General Principle to Explain Laws of Nature' by Gottfried Leibniz

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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