Combining Texts

You have chosen 'Sweet Dreams' by Daniel C. Dennett, 'Letter to Frege 29.12.1899' by David Hilbert and 'Mathematical Thought from Ancient to Modern Times' by Morris Kline

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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