Combining Texts

You have chosen 'On the Nature of Mathematical Reasoning' by Henri Poincaré, 'The Universe as We Find It' by John Heil and 'Gravity and Grace (9 extracts)' by Simone Weil

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