You have chosen 'Summa totius logicae' by William of Ockham, 'On the General Idea of Proof Theory' by Dag Prawitz and 'There are no ordinary things' by Peter Unger
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 |