You have chosen 'Theory of Knowledge (2nd edn)' by Keith Lehrer, 'Entity and Identity' by Peter F. Strawson and 'A General Principle to Explain Laws of Nature' 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 |