Combining Texts

You have chosen 'Reply to Fourth Objections' by René Descartes, 'Explanatory Coherence' by Paul Thagard and 'Introduction to 'Language Truth and Logic'' by A.J. Ayer

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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