You have chosen 'Principles of Philosophy' by René Descartes, 'True in Theory, but not in Practice' by Immanuel Kant and 'The Ultimate Constituents of Matter' by Bertrand Russell
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 |