Combining Texts

You have chosen 'Aristotle and Descartes on Matter' by Gottfried Leibniz, 'Abduction and Induction' by Charles Sanders Peirce and 'What is innate and why' by Hilary Putnam

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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