You have chosen 'On the Nature of the Gods ('De natura deorum')' by M. Tullius Cicero, 'On 'Generation and Corruption'' by Albert of Saxony and 'Introduction to Mathematical Philosophy' by Bertrand Russell
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 |