You have chosen 'Abstract of 'The Fourfold Root'' by Arthur Schopenhauer, 'Scientific Explanation and the Causal Structure of the World' by Wesley Salmon and 'Launching Points to the Realm of the Mind' by Porphyry
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 |