The various visual arts exist within a continuum that ranges from purely aesthetic purposes at one end to purely utilitarian purposes at the other. Such a polarity of purpose is reflected in the commonly used terms artist and artisan, the latter understood as one who gives considerable attention to the utilitarian. This should by no means be taken as a rigid scheme, however. Even within one form of art, motives may vary widely; thus a potter or a weaver may create a highly functional work that is at the same time beautiful—a salad bowl, for example, or a blanket—or may create works that have no purpose beyond being admired. In cultures such as those of Africa and Oceania, a definition of art that encompasses this continuum has existed for centuries. In the West, however, by the mid-18th century the development of academies for painting and sculpture established a sense that these media were “art” and therefore separate from more utilitarian media.