You have chosen 'What is Logic?st1=Ian Hacking' by , 'Introduction to 'Language Truth and Logic'' by A.J. Ayer and 'Replies on 'Limits of Abstraction'' by Kit Fine
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 |