“It's almost as if art, in painting and music and stuff, is the leftover of some activity. The activity is the thing that I'm most interested in. Nearly everything that I've done was to see what would happen if I did this instead of that.”

X magazine (1959-62)
Context: The Art of painting is itself an intensely personal activity. It may be labouring the obvious to say so but it is too little recognised in art journalism now that a picture is a unique and private event in the life of the painter: an object made alone with a man and a blank canvas... A real painting is something which happens to the painter once in a given minute; it is unique in that it will never happen again and in this sense is an impossible object. It is judged by the painter simply as a success or failure without qualification. And it is something which happens in life not in art: a picture which was merely the product of art would not be very interesting and could tell us nothing we were not already aware of. The old saying, “what you don’t know can’t hurt you”, expresses the opposite idea to that which animates the painter before his canvas. It is precisely what he does not know which may destroy him.

In a letter from Paris, 15 May 1906 to Otto Modersohn in Worpswede; as quoted in Voicing our visions, – Writings by women artists; ed. Mara R. Witzling, Universe New York, 1991, p. 204
1906 + 1907

Quote of Johns, from: John Adds Plaster Casts To Focus Target Paintings, Donald Key, Milwaukee Journal, 19 June 1960, pt. 5, p. 6
1960s

L. E. Dickson, during a discussion period that followed the presentation of a paper at a meeting of the American Mathematical Society, where he criticized the choice of the paper’s topic. Fifteen minutes later he presented a paper of his own outlining a proof that every sufficiently large integer can be written as a sum of, not 1140 tenth powers (the best previous result), but 1046 tenth powers.
Source: Howard Eves in Return to Mathematical Circles http://primes.utm.edu/glossary/page.php?sort=Strobogrammatic

The Decline and Fall of Practically Everybody (1950), Part II: Ancient Greeks and Worse, Nero

Third Radner Lecture, Columbia University, New York City (29 April 1959), as published in Truman Speaks : Lectures And Discussions Held At Columbia University On April 27, 28, And 29, 1959 (1960), p. 111

Variant: I’m trying to make some sense out of the phrase “Everything happens for a reason,” and I think I’ve figured out what the reason is—to piss me off.
Source: Love, Rosie

"Maxfield Parrish Will Discard 'Girl-on-Rock' Idea in Art" Associated Press (27 April 1931)

Source: 1970s, Social Psychology of Organizing, (1979), p. 148