You have chosen 'The Roots of Reference' by Willard Quine, 'Principles of Philosophy of the Future' by Ludwig Feuerbach and 'Sense Data and the Percept Theory' by Roderick Firth
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 |