You have chosen 'To be is to be the value of a variable..' by George Boolos, 'How Things Might Have Been' by Penelope Mackie and 'Letters to Blijenburgh' by Baruch de Spinoza
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 |