Combining Texts

You have chosen 'Idealism: a critical survey' by A.C. Ewing, 'Platonism and the Spiritual Life' by George Santayana and 'Logic [1897]' 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