You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'On the Law of War' by Francis de Vitoria and 'Pref to new 'Materialist Theory'' by David M. Armstrong
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 |