You have chosen 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo, 'Elements of Law and Justice' by Gottfried Leibniz and 'The Mind and the Soul' by Jenny Teichmann
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 |