Combining Texts

You have chosen 'Symbolic Reasoning' by Hugh MacColl, 'works' by Adam Cross and 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell

start again     |    choose another area for these texts     |    all the ideas for this combination of texts
All the ideas for Action, or select a subheading:
      A. Definition of Action
      B. Preliminaries of Action
      C. Motives for Action