You have chosen 'The Evolution of Logic' by William D. Hart, 'Sense Data and the Percept Theory' by Roderick Firth and 'The Ages of the World' by Friedrich Schelling
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 |