You have chosen 'Reply to 'Rorarius' 2nd ed' by Gottfried Leibniz, 'The Ultimate Constituents of Matter' by Bertrand Russell and 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo
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 |