A profile is never motionless before our eyes, but it constantly appears and disappears. On account of the persistency of an image upon the retina, moving objects constantly multiply themselves; their form changes like rapid vibrations... To paint a human figure you must not paint it; you must render the whole of its surrounding atmosphere.

As quoted in Futurism, ed. Didier Ottinger; Centre Pompidou / 5 Continents Editions, Milan, 2008, p. 172. - 'Manifesto of Futurist Painters,' April 1910