Combining Texts

You have chosen 'Letter to Russell' by Ludwig Wittgenstein, 'Cognition of Value in Aristotle's Ethics' by Deborah Achtenberg and 'Sententia on 'De Caelo'' by Thomas Aquinas

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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