You have chosen 'fragments/reports' by Posidonius, 'Regressive Method for Premises in Mathematics' by Bertrand Russell and 'Psychology from an empirical standpoint' by Franz Brentano
start again | choose another area for these texts | all the ideas for this combination of texts| All the ideas for Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |