Combining Texts

You have chosen 'The Value of Science' by Henri Poincaré, 'An Essay on Free Will' by Peter van Inwagen and 'Oldest System Prog. of German Idealism' by Georg W.F.Hegel

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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