Combining Texts

You have chosen 'Open Society and Its Enemies:Hegel and Marx' by Karl Popper, 'New System and Explanation of New System' by Gottfried Leibniz and 'Gentzen's Analysis of First-Order Proofs' by Dag Prawitz

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All the ideas for Knowledge Aims, or select a subheading:
      A. Knowledge
      B. Certain Knowledge
      C. Knowing Reality