Combining Texts

You have chosen 'Defining 'Intrinsic' (with Rae Langton)' by David Lewis, 'The Meaning of the Word' by and 'An Axiomatization of Set Theory' by John von Neumann

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