Combining Texts

You have chosen 'Counterpart theory and Quant. Modal Logic' by David Lewis, 'The Concept of Truth for Formalized Languages' by Alfred Tarski and 'Among the Dead Cities' by A.C. Grayling

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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