Combining Texts

You have chosen 'A Realistic Theory of Categories' by Roderick Chisholm, 'Evil and Omnipotence' by J.L. Mackie and 'A World of Propensities' by Karl Popper

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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