Full Idea
The idea of the Dretske-Armstrong-Tooley view is very simple: the laws of nature relate properties to properties.
Gist of Idea
Maybe laws of nature are just relations between properties?
Source
Rom Harré (Laws of Nature [1993], 2)
Book Reference
Harré,Rom: 'Laws of Nature' [Duckworth 1993], p.48
A Reaction
Presumably the relations are necessary ones. I don't see why we need to mention these wretched 'universals' in order to expound this theory. It sounds much more plausible if you just say a property is defined by the way it relates to other properties.