Combining Texts

You have chosen 'On Plural Reference and Set Theory' by Helen Cartwright, 'The Courtier and the Heretic' by Matthew Stewart and 'Ontology and the Ambitions of Metaphysics' by Thomas Hofweber

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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