Combining Texts

You have chosen 'Axiomatic Theories of Truth (2005 ver)' by Volker Halbach, 'Intuitionism and Formalism' by Luitzen E.J. Brouwer and 'Intro to 'Provenance of Pure Reason'' by William W. Tait

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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