You have chosen 'Comments on a Certain Broadsheet' by René Descartes, 'Logic as Semiotic: Theory of Signs' by Charles Sanders Peirce and 'Logic (Port-Royal Art of Thinking)' by Arnauld / Nicole
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 |