Combining Texts

You have chosen 'Introduction to Mathematical Logic' by Michal Walicki, 'Causation and the Manifestation of Powers' by Alexander Bird and 'De aequopollentia causae et effectus' 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