Combining Texts

You have chosen 'Writing the Book of the World' by Theodore Sider, 'Three Dialogues of Hylas and Philonous' by George Berkeley and 'Does Emp.Knowledge have Foundation?' by Wilfrid Sellars

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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