You have chosen 'Abortion and the Doctrine of Double Effect' by Philippa Foot, 'Preface to 'De Revolutionibus'' by Andreas Osiander 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 Natural Theory, or select a subheading: |
| A. | Speculations on Nature | |
| B. | Natural Kinds | |
| C. | Causation | |
| D. | Laws of Nature |