Combining Texts

You have chosen 'The Logic of Infinity' by Henri Poincaré, 'The Nature of Things' by Anthony Quinton and 'The Methods of Ethics (7th edn)' by Henry Sidgwick

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