You have chosen 'The Value of Science' by Henri Poincaré, 'Boole calculus and the Concept script' by Gottlob Frege and 'Knowledge and the State of Nature' by Edward Craig
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Reality, or select a subheading: |
| A. | Classical Physics | |
| B. | Modern Physics | |
| C. | Space | |
| D. | Time | |
| E. | Cosmology | |
| F. | Chemistry | |
| G. | Biology |