You have chosen 'Counting and the Natural Numbers' by Jeffrey H. Sicha, 'Must We Believe in Set Theory?' by George Boolos and 'A Specimen of Discoveries' 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 |