You have chosen 'On Duties ('De Officiis')' by M. Tullius Cicero, 'On Divination ('De divinatione')' by M. Tullius Cicero and 'What is an Idea?' by Gottfried Leibniz
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 |