You have chosen 'Investigations in the Foundations of Set Theory I' by Ernst Zermelo, 'Maxims and Reflections' by Wolfgang von Goethe and 'Two Problems of Epistemology' by Karl Popper
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 |