There is nothing more applied than a good theory - multiple attributions, I got this from Helen Couclelis
Computational and Theoretical Geography
One of the reasons Tobler's First Law of Geography is so ubiquitous is that it can be interpreted in so many ways. To me, it encapsulates the connectedness of all things geographic. Geography can only be understood in context. Capturing and reasoning about geographic context is my ambition as a professional geographer.