Combining Texts

You have chosen 'To be is to be the value of a variable..' by George Boolos, 'De Mundo Praesenti' by Gottfried Leibniz and 'What are Sets and What are they For?' by Oliver,A/Smiley,T

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All the ideas for Nature of Minds, or select a subheading:
      A. Nature of Mind
      B. Features of Minds
      C. Capacities of Minds