Combining Texts

You have chosen 'The Courtier and the Heretic' by Matthew Stewart, 'New System and Explanation of New System' by Gottfried Leibniz and 'Basic Problems of Phenomenology' by Martin Heidegger

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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