Combining Texts

You have chosen 'Presupposition and Conversational Implicature' by H. Paul Grice, 'Survival and Identity, with postscript' by David Lewis and 'Warrant and Proper Function' by Alvin Plantinga

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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