Combining Texts

You have chosen '(Nonsolipsistic) Conceptual Role Semantics' by Gilbert Harman, 'Moral Philosophy meets social psychology' by Gilbert Harman and 'A Mathematical Introduction to Logic (2nd)' by Herbert B. Enderton

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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