You have chosen 'On the Philosophy of Logic' by Jennifer Fisher, 'On the Syllogism IV' by Augustus De Morgan and 'The philosophical basis of intuitionist logic' by Michael Dummett
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 |