You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Issues of Pragmaticism' by Charles Sanders Peirce and 'Substitutional Classes and Relations' 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 |