Combining Texts

You have chosen 'New System and Explanation of New System' by Gottfried Leibniz, 'What Required for Foundation for Maths?' by John Mayberry and 'Among the Dead Cities' by A.C. Grayling

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All the ideas for Knowledge Sources, or select a subheading:
      A. A Priori Knowledge
      B. Perception
      C. Rationalism
      D. Empiricism
      E. Direct Knowledge