You have chosen 'The Big Book of Concepts' by Gregory L. Murphy, 'On 'Insolubilia' and their solution' by Bertrand Russell and 'Elements of Law and Justice' by Gottfried Leibniz
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 |