You have chosen 'Opus Maius (major works)' by Roger Bacon, 'The Middle Works (15 vols, ed Boydston)' by John Dewey and 'Introduction to 'Language Truth and Logic'' by A.J. Ayer
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 |