Combining Texts

You have chosen 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz, 'The Sign of Four' by Arthur Conan Doyle and 'Introduction to the Philosophy of History' by Georg W.F.Hegel

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All the ideas for Action, or select a subheading:
      A. Definition of Action
      B. Preliminaries of Action
      C. Motives for Action