Combining Texts

You have chosen 'On the Moral and Legal State of Abortion' by Mary Anne Warren, 'A General Principle to Explain Laws of Nature' by Gottfried Leibniz and 'The Scientific Revolution 1500-1800' by A.R. Hall

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All the ideas for Existence, or select a subheading:
      A. Nature of Existence
      B. Change in Existence
      C. Structure of Existence
      D. Theories of Reality
      E. Categories