You have chosen 'From an Ontological Point of View' by John Heil, 'Introduction to Mathematical Logic' by Michal Walicki and 'The Value of Science' by Henri Poincar
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 |