You have chosen 'The Middle Works (15 vols, ed Boydston)' by John Dewey, 'Of Organum or Ars Magna of Thinking' by Gottfried Leibniz and 'The Decline of the West' by Oswald Spengler
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 |