You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Launching Points to the Realm of the Mind' by Porphyry and 'New System and Explanation of New System' by Gottfried Leibniz
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 |