Combining Texts

You have chosen 'A Puzzle about Belief' by Saul A. Kripke, 'The Central Questions of Philosophy' by A.J. Ayer and 'The Barcan Formula and Metaphysics' by Ori Simchen

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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