Combining Texts

You have chosen 'Opus Maius (major works)' by Roger Bacon, 'Letters to Samuel Clarke' by Gottfried Leibniz and 'On Divination ('De divinatione')' by M. Tullius Cicero

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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