You have chosen 'The Sayings of Confucius' by Confucius, 'On the Conservation of Force' by Hermann von Helmholtz and 'On the Reduction of Necessity to Essence' by Fabrice Correia
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 |