Combining Texts

You have chosen 'Intuitionism: an Introduction' by Arend Heyting, 'The Semantic Conception of Truth' by Alfred Tarski and 'A Specimen of Discoveries' 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