Combining Texts

You have chosen 'Classical Cosmology (frags)' by T.M. Robinson, 'The Folly of Trying to Define Truth' by Donald Davidson and 'The Nature of Universals and Propositions' by G.F. Stout

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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