You have chosen 'The Evolution of Logic' by William D. Hart, 'Intrinsic and Extrinsic Properties' by Ross P. Cameron and 'Our Knowledge of the External World' by Bertrand Russell
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 |