You have chosen 'On boundary numbers and domains of sets' by Ernst Zermelo, 'Launching Points to the Realm of the Mind' by Porphyry and 'Utopia' by Thomas More
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Existence, or select a subheading: |
| A. | Nature of Existence | |
| B. | Change in Existence | |
| C. | Structure of Existence | |
| D. | Theories of Reality | |
| E. | Categories |