Karl Buhler, 1930

By the time the child can draw more that scribble, by the age of four or five years, an already well-formed body of conceptual knowledge formulated in language dominates his memory and controls his graphic work. Drawings are graphic accounts of essentially verbal processes. As an essentially verbal education gains control, the child abandons his graphic efforts and relies almost entirely on words. Language has first spoilt drawing and then swallowed it up completely.