You have chosen 'The Middle Works (15 vols, ed Boydston)' by John Dewey, 'Mathematical logic and theory of types' by Bertrand Russell and 'Letters to Mersenne' by Ren Descartes
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 |