Combining Texts

You have chosen 'Letter to G.H. Schaller' by Baruch de Spinoza, 'Essays on Active Powers 4: Liberty of Agents' by Thomas Reid and 'Tractatus Logico-Philosophicus' by Ludwig Wittgenstein

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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