You have chosen 'Defending the Axioms' by Penelope Maddy, 'A Note on the entscheidungsproblem' by Alonzo Church and 'Metaphysical conseqs of principle of reason' by Gottfried Leibniz
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 |