Combining Texts

You have chosen 'Reply to Fourth Objections' by René Descartes, 'Probability and Logic of Rational Belief' by Henry E. Kyburg Jr and 'The Mind and the Soul' by Jenny Teichmann

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All the ideas for Natural Theory, or select a subheading:
      A. Speculations on Nature
      B. Natural Kinds
      C. Causation
      D. Laws of Nature