You have chosen 'works' by Naguib Mahfouz, 'De aequopollentia causae et effectus' by Gottfried Leibniz and 'On the Nature of the Gods ('De natura deorum')' by M. Tullius Cicero
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |