Combining Texts

You have chosen 'Perception' by Howard Robinson, 'On the Nature of the Gods ('De natura deorum')' by M. Tullius Cicero and 'The Essence of Aesthetic' by Benedetto Croce

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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