You have chosen 'The Sign of Four' by Arthur Conan Doyle, 'De Re and De Dicto' by Alvin Plantinga and 'Criterion of Validity in Reasoning' by Charles Sanders Peirce
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 |