Abstract Expressionism, David Anfam, Thames and Hudson Ltd London, 1990, p. 79
1950s
“Plastic automatism.... as employed by modern masters, like Masson, Miro, [both artists of Surrealism] and Picasso, is actually very little a question of the unconsciousness. It is much more a plastic weapon with which to invent new forms. As such it is one of the twentieth century greatest formal inventions.”
Modern Painter's World, Robert Motherwell , Dyn, Nov. 1942, p. 13
1940s
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Robert Motherwell 42
American artist 1915–1991Related quotes
first published in 'Metro', 1962; as quoted in Interviews with American Artists, by David Sylvester; Chatto & Windus, London 2001, p. 82
1960s, Interview with David Sylvester', (1960)

“I very much like Arp's things. I consider him the only 'pure' artist after Neo/Plasticism.”
In a letter to his friend architect Alfred Roth, 19 November 1931; as quoted in Mondrian, - The Art of Destruction, Carel Blotkamp, Reaktion Books LTD. London 2001, p. 204
1930's

“The greatest invention of the nineteenth century was the invention of the method of invention.”
Source: 1920s, Science and the Modern World (1925), Ch. 6: "The Nineteenth Century"
Variant: The modern age did not so much invent new forms of migration as alter drastically the means and conditions of the old forms
Source: Europe on the Move: War and Population Changes, 1917-1947, 1948, p. 96 as cited in: Sarah Collinson (1999) Globalisation and the dynamics of international migration implications for the refugee regime http://www.unhcr.org/refworld/pdfid/4ff59b852.pdf. May 1999. p. 1

Quote of Malevich, cited in Artists on Art; from the 14th – 20th centuries, ed. Robert Goldwater and Marco Treves; Pantheon Books, 1972, London, p. 452
1910 - 1920

Source: Debunking Economics - The Naked Emperor Of The Social Sciences (2001), Chapter 13, Nothing To Lose But Their Minds, p. 270–271 (See also: Adam Smith, Wealth of Nations, Book I, Chapter VI, p. 58)
Modern Art U.S.A., R. Blesh, New York, Alfred A. Knopf, 1956, pp. 268-69
1950s