Combining Texts

You have chosen 'Letters to Thomasius' by Gottfried Leibniz, 'In Defense of Absolute Essentialism' by Graeme Forbes and 'Beginning Logic' by E.J. Lemmon

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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