You have chosen 'Frege's Concept of Numbers as Objects' by Crispin Wright, 'Philosophy of Logic' by Willard Quine and 'Either/Or: a fragment of life' by Sren Kierkegaard
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 |