You have chosen 'Exigency to Exist in Essences' by Gottfried Leibniz, 'Rules for the Direction of the Mind' by Ren Descartes and 'Identity, Ostension, and Hypostasis' by Willard Quine
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 |