Combining Texts

You have chosen 'On the Natural Faculties' by Galen, 'De Mundo (On the World)' by Thomas Hobbes and 'Knowledge and the Philosophy of Number' by Keith Hossack

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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