You have chosen 'Pragmatism in Retrospect' by Charles Sanders Peirce, 'Letters to Descartes' by Elizabeth, Princess of Bohemia 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 |