“Más es menos” is Spanish for “more is less”. And you can certainly see “más es menos” at work in the paintings of that greatest of Spaniards, Salvador Dalí. The more technically skilled and detailed his art became, the less powerful and interesting it was. Compare Sleep, from 1937…

Le Sommeil (Sleep), 1937

…with Still Life — Fast Moving from 1956:

Still Life — Fast Moving,1956