You have chosen 'The Conquest of Happiness' by Bertrand Russell, 'The Concept of Truth for Formalized Languages' by Alfred Tarski and 'Nominalism and Substitutional Quantifiers' by Ruth Barcan Marcus
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 |