Combining Texts

You have chosen 'On Liberty' by John Stuart Mill, 'Eight Theories of Ethics' by Gordon Graham and 'What do powers do when they are not manifested?' by Stathis Psillos

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All the ideas for Formal Logic, or select a subheading:
      A. Syllogistic Logic
      B. Propositional Logic PL
      C. Predicate Calculus PC
      D. Modal Logic ML
      E. Nonclassical Logics
      F. Set Theory ST
      G. Formal Mereology