Combining Texts

You have chosen 'Isagoge ('Introduction')' by Porphyry, 'On the Conservation of Force' by Hermann von Helmholtz and 'Intro to 'Provenance of Pure Reason'' by William W. Tait

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