You have chosen 'On the Principles of Indiscernibles' by Gottfried Leibniz, 'Apriority as an Evaluative Notion' by Hartry Field and 'An Axiomatization of Set Theory' by John von Neumann
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 |