Combining Texts

You have chosen 'works (all lost)' by Aristippus the elder, 'Abortion and the Doctrine of Double Effect' by Philippa Foot and 'The Internalist Conception of Justification' by Alvin I. Goldman

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All the ideas for Modality, or select a subheading:
      A. Necessity
      B. Possibility
      C. Sources of Modality
      D. Knowledge of Modality
      E. Possible worlds