You have chosen 'Aristotle and Descartes on Matter' by Gottfried Leibniz, 'Queries to the 'Opticks'' by Isaac Newton and 'Frege's Concept of Numbers as Objects' by Crispin Wright
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 |