You have chosen 'The Aim and Structure of Physical Theory' by Pierre Duhem, 'Varieties of Causation' by Ernest Sosa and 'Sententia on 'De Caelo'' by Thomas Aquinas
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Modality, or select a subheading: |
| A. | Necessity | |
| B. | Possibility | |
| C. | Sources of Modality | |
| D. | Knowledge of Modality | |
| E. | Possible worlds |