Combining Texts

You have chosen 'On the Principles of Indiscernibles' by Gottfried Leibniz, 'On the Concept of Number' by David Hilbert and 'Explanations in reply to Mr Bradley' by Bertrand Russell

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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