You have chosen 'The Character of Physical Law' by Richard P. Feynman, 'A Completeness Theorem in Modal Logic' by Saul A. Kripke and 'De rebus naturalibus' by Jacob Zabarella
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 |