“I used to look in my mind for the unwritten page
if my mind was empty enough I could see it
I didn't paint the plane
I just drew this horizontal line
Then I found out about all the other lines
But I realized what I liked was the horizontal line
Then I painted the two rectangles
correct composition
if they're just right”
1970's, The Untroubled Mind', 1971
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Agnes Martin 48
American artist 1912–2004Related quotes
Source: 1960s, Interview with Dorothy Seckler, 1967, p. 55-59.

Source: Quote of Mondrian about 1914-1918; in 'Mondrian, Essays' ('Plastic art and pure plastic art', 1937 and his other essays, (1941-1943) by Piet Mondrian; Wittenborn-Schultz Inc., New York, 1945, p. 10; as cited in De Stijl 1917-1931 - The Dutch Contribution to Modern Art, by H.L.C. Jaffé http://www.dbnl.org/tekst/jaff001stij01_01/jaff001stij01_01.pdf; J.M. Meulenhoff, Amsterdam 1956, p. 43

Quote from a letter to Léon Peisse, 15 July 1949; as cited in Letters of the great artists – from Blake to Pollock, Richard Friedenthal, Thames and Hudson, London, 1963, p. 68
this quote refers to Delacroix's refusal to use the line as boundary of the form in his painting art, as a too sharp dividing force in the picture - in contrast to the famous classical painter in Paris then, Ingres
1831 - 1863
Source: 1960s, Interview with Dorothy Seckler, 1967, p. 55-59.

[on his two paintings 'Sea' and ' Trees', both made in 1912 https://upload.wikimedia.org/wikipedia/commons/6/65/Trees%2C_1912%2C_Mondrian.jpg
note in his sketchbook, undated but c. 1912; as quoted in Mondrian, - The Art of Destruction, Carel Blotkamp, Reaktion Books LTD. London 2001, p. 70
1910's

"Independence Day"
Song lyrics, The River (1980)
Source: 1960 - 1970, Interview with David Sylvester 2. Spring 1965, p. 255