You have chosen 'The Value of Science' by Henri Poincaré, 'On the Source of Necessity' by Ross P. Cameron and 'The Concept of Truth for Formalized Languages' by Alfred Tarski
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 |