Combining Texts

You have chosen 'Three Grades of Modal Involvement' by Willard Quine, 'Morality as system of hypothetical imperatives' by Philippa Foot and 'No Moral Difference' by James Rachels

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