You have chosen 'Prolegomena to Any Future Metaphysic' by Immanuel Kant, 'Theory of Science (Wissenschaftslehre, 4 vols)' by Bernard Bolzano and 'fragments/reports' by Aristippus the elder
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 |