Combining Texts

You have chosen 'Reference and Generality (3rd ed)' by Peter Geach, 'Parthood and Identity across Time' by Judith (Jarvis) Thomson and 'Intro to Naming,Necessity and Natural Kinds' by Stephen P. Schwartz

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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