You have chosen 'Problems of Philosophy' by Bertrand Russell, 'Boole calculus and the Concept script' by Gottlob Frege and 'The Decline of the West' by Oswald Spengler
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 |