Combining Texts

You have chosen 'Set Theory and related topics (2nd ed)' by Seymour Lipschutz, 'On the Pragmatics of Communications' by Jrgen Habermas and 'Letters to Thomasius' by Gottfried Leibniz

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All the ideas for Mathematics, or select a subheading:
      A. Nature of Mathematics
      B. Foundations for Mathematics
      C. Sources of Mathematics