You have chosen 'Abstract of 'The Fourfold Root'' by Arthur Schopenhauer, 'A Combinatorial Theory of Possibility' by David M. Armstrong and 'How to Define Theoretical Terms' by David Lewis
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 |