You have chosen 'Frege's Theory of Numbers' by Charles Parsons, 'On 'The Beginning of Philosophy'' by Ludwig Feuerbach and 'Principles of Nature and Grace based on 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 |