Combining Texts

You have chosen 'The Spirit of the Laws (rev. 1757)' by Baron de Montesquieu, 'Survival and Identity, with postscript' by David Lewis and 'Symbolic Logic (with Langford)' by C.I. Lewis

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All the ideas for Science, or select a subheading:
      A. Basis of Science
      B. Scientific Theories
      C. Induction
      D. Explanation