Combining Texts

You have chosen 'Matter and Memory' by Henri Bergson, 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell and 'Letters to Samuel Clarke' by Gottfried Leibniz

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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