You have chosen 'Counterpart theory and Quant. Modal Logic' by David Lewis, 'Introduction to the Theory of Logic' by Jos L. Zalabardo and 'The Ages of the World' by Friedrich Schelling
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 |