You have chosen 'Intensional Logic' by Melvin Fitting, 'Letters to Johann Bernoulli' by Gottfried Leibniz and 'Logicism in the 21st Century' by B Hale / C Wright
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 |