Combining Texts

You have chosen 'Idea for a Universal History' by Immanuel Kant, 'Knowledge First (and reply)' by Timothy Williamson and 'Steps Towards a Constructive Nominalism' by Goodman,N/Quine,W

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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