You have chosen 'On Plural Reference and Set Theory' by Helen Cartwright, 'Nature and Observability of Causal Relations' by Curt Ducasse and 'Letters to Jacques Lenfant' 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 |