active 19th century Harry Willson, The Use of a Box of Colours, in a Practical Demonstration on Composition…
“ The magic of art does not consist in an exact resemblance of an object:—'An exact resemblance,' says Sir Joshua, 'may be even disagreeable. The effect of figures in wax-work, for instance, is disgusting to the eye accomplished to judge of Fine Art, yet it approaches reality. We are pleased, on the contrary, by seeing ends accomplished by seemingly inadequate means; but to express distances on a plain surface, softness by hard bodies, and particular colouring by materials which are not singly of that colour, produces that magic which is the prize and triumph of Art. ”
