Uncovering cartographic affinities and unities within a world of highly expressive difference appears more and more the key problematic of the times. This is the political mission that any dialectical theory of historical-geographical materialism must address.
Discovering the nature of such connections and learning to translate politically between them is a problem for detailed research. Theoretically, the cogency and political power of the materialist version of the relational view appears as remarkable and as exhaustive as it is dialectically consistent.
David Harvey (1996: 290) in Justice, Nature and the Geography of Difference.