Combining Texts

You have chosen 'Classical Cosmology (frags)' by T.M. Robinson, 'The Principles of Human Knowledge' by George Berkeley and 'On the General Idea of Proof Theory' by Dag Prawitz

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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