Combining Texts

You have chosen 'Building Blocks of Mathematical Logic' by Moses Schönfinkel, 'Reply to Richards' by H. Paul Grice and 'Elucidation of some points in E.Schrder' 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