You have chosen 'The Courtier and the Heretic' by Matthew Stewart, 'Review of Frege's 'Grundlagen'' by George Cantor and 'Boole calculus and the Concept script' by Gottlob Frege
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 |