Combining Texts

You have chosen 'Counterparts and Identity' by Robert C. Stalnaker, 'On the Nature of the Gods ('De natura deorum')' by M. Tullius Cicero and 'On the Principles of Indiscernibles' by Gottfried Leibniz

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