You have chosen 'Isagoge ('Introduction')' by Porphyry, 'Phil of Mathematics and Natural Science' by Hermann Weyl and 'A World of States of Affairs' by David M. Armstrong
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 |