You have chosen 'Isagoge ('Introduction')' by Porphyry, 'Philosophies of Mathematics' by A.George / D.J.Velleman and 'The Limits of Contingency' by Gideon Rosen
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 |