Combining Texts

You have chosen 'Notes on John Wilkins' by Gottfried Leibniz, 'Expositio super viii libros' by William of Ockham and 'A Mathematical Introduction to Logic (2nd)' by Herbert B. Enderton

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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