You have chosen 'A Pragmatic Conception of the A Priori' by C.I. Lewis, 'Philosophy of Logic' by Willard Quine and 'Logic [1897]' by Gottlob Frege
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 |