“The local-tone is the intrinsic value of a thing - excluding any effects of light. The local-tone of a common pearl is very nearly white; that of a lump of coal, nearly black.” LightValuesBlackWhiteCommonEffectsLocalsToneCoalPearlsLumpsIntrinsic Value Author:Nathan Goldstein
“Value, whether the result of massed lines, broad strokes, or washes, is the necessary and only tool for modelling form with light.” LightFormValuesLinesResultsToolsBroadsStrokesModelling Author:Nathan Goldstein
“Value gives the artist the means of showing subtle changes in a form's surface-state, and it helps clarify the relative distance between forms.” GivingMeanStatesHelpingFormArtistValuesDistanceSurfaceSubtleRelative Author:Nathan Goldstein