You have chosen 'Letters to Antoine Arnauld' by René Descartes, 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo and 'Thinking About Mathematics' by Stewart Shapiro
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 |