You have chosen 'Letters to Antoine Arnauld' by Gottfried Leibniz, 'Presidential Address of Am. Math. Soc' by Oswald Veblen and 'The Concept of Logical Consequence' by John Etchemendy
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 |