Combining Texts

You have chosen 'Specimen inventorum' by Gottfried Leibniz, 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell and 'Are Freedom and Equality Compatible?' by G.A. Cohen

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All the ideas for Modes of Existence, or select a subheading:
      A. Relations
      B. Properties
      C. Powers and Dispositions
      D. Universals
      E. Nominalism