“The inherent lightness or darkness of a form - its local-tone - is a given quality of all forms. It is affected by, but separate from, the light and dark areas that result from light falling on forms.” LightFormFallGivenDarkResultsQualityDarknessAreasLocalsToneAffectedInherentLightnessLight And Dark 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