You have chosen 'Reply to 'Rorarius' 2nd ed' by Gottfried Leibniz, 'Criterion of Validity in Reasoning' by Charles Sanders Peirce and 'Concepts and Counting' by Ian Rumfitt
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 |