Combining Texts

You have chosen 'The Really Hard Problem' by Owen Flanagan, 'An Analysis of Knowledge and Valuation' by C.I. Lewis and 'Axiomatic Theories of Truth (2005 ver)' by Volker Halbach

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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