Combining Texts

You have chosen 'Croce and Collingwood' by Gary Kemp, 'The Spirit of the Laws (rev. 1757)' by Baron de Montesquieu and 'An Analysis of Knowledge and Valuation' by C.I. Lewis

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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