You have chosen 'Criterion of Validity in Reasoning' by Charles Sanders Peirce, 'Explaining Explanation' by David-Hillel Ruben and 'On the analysis of moral judgements' by A.J. Ayer
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 |