You have chosen 'Nominalism and Substitutional Quantifiers' by Ruth Barcan Marcus, 'Letters to Johann Bernoulli' by Gottfried Leibniz and 'Summa quaestionum super Sententias' by Peter John Olivi
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 |