Combining Texts

You have chosen 'On Plural Reference and Set Theory' by Helen Cartwright, 'works' by Karl Marx and 'A Slim Book about Narrow Content' by Gabriel M.A. Segal

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All the ideas for Thought, or select a subheading:
      A. Modes of Thought
      B. Mechanics of Thought
      C. Content
      D. Concepts
      E. Abstraction