You have chosen 'On the Nature of the Gods ('De natura deorum')' by M. Tullius Cicero, 'A Dictionary of Political Thought' by Roger Scruton and 'Letters to Johann Bernoulli' 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 |