You have chosen 'On Duties ('De Officiis')' by M. Tullius Cicero, 'A General Principle to Explain Laws of Nature' by Gottfried Leibniz and 'Democracy in America (abr Renshaw)' by Alexis de Tocqueville
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 |