Combining Texts

You have chosen 'Mathematics without Numbers' by Geoffrey Hellman, 'Les quaestiones de anima (lectures on the soul)' by Blasius of Parma and 'The Rejection of Consequentialism' by Samuel Scheffler

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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