You have chosen 'Natural Goodness' by Philippa Foot, 'Letters to a German Princess' by Leonhard Euler and 'On Fate ('De fato')' by M. Tullius Cicero
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 |