You have chosen 'Three Grades of Modal Involvement' by Willard Quine, 'Nature and Meaning of Numbers' by Richard Dedekind and 'Popular Scientific Lectures' by Ernst Mach
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 |