Combining Texts

You have chosen 'In Defense of Essentialism' by L.A. Paul, 'Introduction to the Theory of Logic' by Jos L. Zalabardo and 'The Beautiful in Music' by Eduard Hanslick

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All the ideas for Existence, or select a subheading:
      A. Nature of Existence
      B. Change in Existence
      C. Structure of Existence
      D. Theories of Reality
      E. Categories