You have chosen 'Treatise on double arguments' by Anon (Diss), 'Principles of Nature and Grace based on Reason' by Gottfried Leibniz and 'On Sense and Reference' by Gottlob Frege
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 |