Miró was one of the most influential artists of the 20th century. He pioneered the technique of staining; creating blurry, multi-colored cloudy backgrounds in thinned oil paint throughout the 1920s and 1930s; on top of which he added his calligraphy, characters and abundant lexicon of words, and imagery. Arshile Gorky openly admired Miró's work and painted Miró-like paintings, before finally discovering his own originality in the early 1940s. During the 1960s Miró painted large (abstract expressionist scale) radiant fields of vigorously brushed paint in blue, in white, and other monochromatic fields of colors; with blurry black orbs and calligraphic stone-like shapes, floating at random. These works resembled the Color Field paintings of the younger generation. Biographer Jacques Dupin said this about Miró's work of the early 1960s: