You have chosen 'Matter and Memory' by Henri Bergson, 'To be is to be the value of a variable..' by George Boolos and 'Non-Monotonic Logic' by G. Aldo Antonelli
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 |