Combining Texts

You have chosen 'Letters to Antoine Arnauld' by Gottfried Leibniz, 'On the Ultimate Origination of Things' by Gottfried Leibniz and 'Preface to 'De Revolutionibus'' by Andreas Osiander

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