Combining Texts

You have chosen 'Exigency to Exist in Essences' by Gottfried Leibniz, 'Papers of 1906' by Bertrand Russell and 'New Foundations for Mathematical Logic' by Willard Quine

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All the ideas for Theory of Logic, or select a subheading:
      A. Overview of Logic
      B. Logical Consequence
      C. Ontology of Logic
      D. Assumptions for Logic
      E. Structures of Logic
      F. Referring in Logic
      G. Quantification
      H. Proof Systems
      I. Semantics of Logic
      J. Model Theory in Logic
      K. Features of Logics
      L. Paradox