“Aerial perspective has nothing to do with line, but concerns tones and colours, by the delicate manipulation of which an artist can suggest infinite distance.” ArtistLinesPerspectiveConcernInfiniteDistanceToneColourManipulationDelicate Author:Walter J. Phillips
“Drawing is the cornerstone of the graphic, plastic arts. Drawing is the coordination of line, tone, and color symbols into formations that express the artist's thought.” ArtArtistLinesColorDrawingSymbolsTonePlasticGraphicFormationCornerstonesCoordination Author:John French Sloan