You have chosen 'The Central Questions of Philosophy' by A.J. Ayer, 'Principles of Nature and Grace based on Reason' by Gottfried Leibniz and 'Merely Possible Propositions' by Robert C. Stalnaker
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Knowledge Sources, or select a subheading: |
| A. | A Priori Knowledge | |
| B. | Perception | |
| C. | Rationalism | |
| D. | Empiricism | |
| E. | Direct Knowledge |