You have chosen 'The Essence of Reference' by Mark Sainsbury, 'Difficulties of Transfinite Numbers and Types' by Bertrand Russell and 'Sources of Knowledge of Mathematics' 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 |