You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'Elimination of Metaphysics by Analysis of Language' by Rudolph Carnap and 'Proof of an External World' by G.E. Moore
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 |