You have chosen 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo, 'Natural Kinds' by Willard Quine and 'The Spirit of Democratic Capitalism' by Michael Novak
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 |