You have chosen 'On the True Doctrine (Against Christians)' by Celsus, 'works' by Thoralf Skolem and 'The Web of Belief' by W Quine / J Ullian
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 |