You have chosen 'On the Nature of the Gods ('De natura deorum')' by M. Tullius Cicero, 'Psychophysical and theoretical identifications' by David Lewis and 'To be is to be the value of a variable..' by George Boolos
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Knowledge Criteria, or select a subheading: |
| A. | Justification Problems | |
| B. | Internal Justification | |
| C. | External Justification | |
| D. | Scepticism | |
| E. | Relativism |