Combining Texts

You have chosen 'Protocol Sentences' by Otto Neurath, 'Letters to Leibniz 1' by Isaac Newton and 'Three theses about dispositions' by Jackson/Pargetter/Prior

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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