You have chosen 'Nature and Observability of Causal Relations' by Curt Ducasse, 'Intro to 2nd ed of Principia Mathematica' by Bertrand Russell and 'Philosophy of Arithmetic' by Edmund Husserl
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 |