Combining Texts

You have chosen 'works' by Tertullian, 'Comment on Armstrong and Forrest' by David Lewis and 'Aristotle and Kant on the Source of Value' by Christine M. Korsgaard

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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