Combining Texts

You have chosen 'Approaches to Intentionality' by William Lyons, 'Outline of a System of the Philosophy of Nature' by Friedrich Schelling and 'To be is to be the value of a variable..' by George Boolos

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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