The first chapter, "The Geometric Style," argues that geometric ornament originated, not from such technical processes as wickerwork and weaving, but rather from an "immanent artistic drive, alert and restless for action, that human beings possessed long before they invented woven protective coverings for their bodies." He supported this position through an analysis of geometric ornament in Stone Age European art, in particular objects that had recently been discovered in the Dordogne. This ornament, he argued, developed from attempts to represent natural forms in two dimensions, which gave rise to the idea of an outline. After this "invention of line," the cave-dwellers proceeded to arrange lines "according to the principles of rhythm and symmetry."