You have chosen 'The Evolution of Logic' by William D. Hart, 'On the Nature of Truth and Falsehood' by Bertrand Russell and 'Reply to First Objections' by Ren Descartes
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 |