Combining Texts

You have chosen 'Theory of Knowledge (2nd edn)' by Keith Lehrer, 'On Sense and Reference' by Gottlob Frege and 'On the Conservation of Force' by Hermann von Helmholtz

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All the ideas for Action, or select a subheading:
      A. Definition of Action
      B. Preliminaries of Action
      C. Motives for Action