Combining Texts

You have chosen 'Abstract of 'The Fourfold Root'' by Arthur Schopenhauer, 'Foundations of Geometry' by David Hilbert and 'A Future for Presentism' by Craig Bourne

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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