Combining Texts

You have chosen 'Letter to G.H. Schaller' by Baruch de Spinoza, 'Speeches in Elberfeld' by Friedrich Engels and 'Precepts for Advancing Science and Arts' 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