Combining Texts

You have chosen 'Logicism and Ontological Commits. of Arithmetic' by Harold Hodes, 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo and 'On Copernicanism and Relativity of Motion' by Gottfried Leibniz

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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