So important, indeed, is the use of maps in geographic work, that, without wishing to propose any new law, it seems fair to suggest to the geographer… - Richard Hartshorne

The core study of geography is the study of places, that is the analysis of the significant differences that distinguish the various areas of the world from each other. Among the differences that are significant to this areal differentiation, one of the more obvious are differences in landforms; one of the least obvious to the eye, but nonetheless important in molding the character of areas, are the differences in their political organization. In pursuing these and other separate topics, geographers "radiate out in diverse directions" "and for various distances, toward the cores of other disciplines." As long as they realise where they are in reference to the central core, they may hope to understand each other purposes.

Numerous geographers writing in recent years concerning the nature and scope of their subject have described the relation of their field to other fields of science in terms of a concept said to stem from Immanuel Kant and from Alexander von Humboldt. Whatever may be the original source of the concept, its importance in the current geographic thought stems from the writing of , the German master of the methodology of geography.

Geography is not an infant subject, born out of the womb of American geology a few decades ago, which each new generation of American students may change around at will.