Combining Texts

You have chosen 'Criterion of Validity in Reasoning' by Charles Sanders Peirce, 'Draft Statement of Human Obligations' by Simone Weil and 'Boole calculus and the Concept script' by Gottlob Frege

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