Combining Texts

You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'Contemporary Philosophy of Mind' by Georges Rey and 'True in Theory, but not in Practice' by Immanuel Kant

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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