You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Tarski on Truth and Logical Consequence' by John Etchemendy 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 |