Combining Texts

You have chosen 'On the Conservation of Force' by Hermann von Helmholtz, 'Goodbye Growing Block' by Trenton Merricks and 'Belief Truth and Knowledge' by David M. Armstrong

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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