You have chosen 'Theory of Science (4 vols)' by Bernard Bolzano, 'Anthropological Studies of Classification' by Roy Ellen and 'On the Introduction of Transfinite Numbers' by John von Neumann
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 |