Combining Texts

You have chosen 'Letters to Wagner' by Gottfried Leibniz, 'Probability and Logic of Rational Belief' by Henry E. Kyburg Jr and 'The Theory of Logical Types' by Bertrand Russell

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