You have chosen '23: Book of Isaiah' by Isaiah, 'How Things Might Have Been' by Penelope Mackie and 'The Foundations of Empirical Knowledge' 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 |