You have chosen 'Set Theory and Its Philosophy' by Michael Potter, 'Three Dialogues of Hylas and Philonous' by George Berkeley and 'Criterion of Validity in Reasoning' by Charles Sanders Peirce
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 |