Combining Texts

You have chosen 'Material Beings' by Peter van Inwagen, 'Investigations into Logical Deduction' by Gerhard Gentzen and 'On boundary numbers and domains of sets' by Ernst Zermelo

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All the ideas for Ethics, or select a subheading:
      A. Egoism
      B. Contract Ethics
      C. Virtue Theory
      D. Deontological Ethics
      E. Utilitarianism
      F. Existentialism