Combining Texts

You have chosen 'Defending the Axioms' by Penelope Maddy, 'Why coherence is not enough' by James Van Cleve and 'Elucidation of some points in E.Schrder' by Gottlob Frege

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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