John Ruskin,
The Seven Lamps of Architecture
“ Of course, therefore, whatever characters of line or shade or expression are productive of sublimity, will become productive of picturesqueness; what these characters are I shall endeavor hereafter to show at length; but, among those which are generally acknowledged, I may name angular and broken lines, vigorous oppositions of light and shadow, and grave, deep, or boldly contrasted color ”
