You have chosen 'On boundary numbers and domains of sets' by Ernst Zermelo, 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell and 'Positivism and Realism' by Moritz Schlick
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 |