You have chosen 'The Philosopher's Toolkit' by J Baggini / PS Fosl, 'Title, Unity, Authenticity of the 'Categories'' by Michael Frede and 'On Second-Order Logic' by George Boolos
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 |