Combining Texts

You have chosen 'On Plural Reference and Set Theory' by Helen Cartwright, 'Tarski on Truth and Logical Consequence' by John Etchemendy and 'The Conquest of Happiness' by Bertrand Russell

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All the ideas for Objects, or select a subheading:
      A. Existence of Objects
      B. Unity of Objects
      C. Structure of Objects
      D. Essence of Objects
      E. Objects over Time
      F. Identity among Objects