... ones. Nearly all expression of form, in drawing, depends on your power of gradating delicately; and the gradation is always most skilful which passes from one tint into another very little paler. Draw, therefore, two parallel lines for limits to your work, as in Fig. 2., and try to gradate the shade evenly from white to black, passing over the greatest possible distance, yet so that every part of the band may have visible change in it. The perception of gradation is very deficient in all beginners (not to say, in many artists), and you will ... — The Crown of Wild Olive • John Ruskin
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