You have chosen 'The Nature of Mathematical Knowledge' by Philip Kitcher, 'How free does the will need to be?' by Bernard Williams and 'Elements of Set Theory' by Herbert B. Enderton
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 |