You have chosen 'Isagoge ('Introduction')' by Porphyry, 'Grundlagen (Foundations of Theory of Manifolds)' by George Cantor and 'Fourfold Root of Princ of Sufficient Reason' by Arthur Schopenhauer
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Modes of Existence, or select a subheading: |
| A. | Relations | |
| B. | Properties | |
| C. | Powers and Dispositions | |
| D. | Universals | |
| E. | Nominalism |