You have chosen 'Philosophy of Natural Science' by Carl Hempel, 'The Methods of Ethics (7th edn)' by Henry Sidgwick and 'Investigations into Logical Deduction' by Gerhard Gentzen
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Modes of Existence, or select a subheading: |
| A. | Relations | |
| B. | Properties | |
| C. | Powers and Dispositions | |
| D. | Universals | |
| E. | Nominalism |