“It is almost impossible for me to read contemporary mathematicians who, instead of saying “Petya washed his hands,” write simply: “There is a t_1<0 such that the image of t_1 under the natural mapping t_1 \mapsto {\rm Petya}(t_1) belongs to the set of dirty hands, and a t_2, t_1, such that the image of t_2 under the above-mentioned mapping belongs to the complement of the set defined in the preceding sentence.””
" Conversation with Vladimir Igorevich Arnol’d http://link.springer.com/article/10.1007/BF03023727" (Arnold interviewed by Smilka Zdravkovska), The Mathematical Intelligencer, December 1987, Volume 9, Issue 4, pp 28–32.
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Vladimir I. Arnold 8
Russian mathematician 1937–2010Related quotes

In a letter to Heinrich Wilhelm Matthias Olbers (14 May 1826), defending Chevalier d'Angos against presumption of guilt (by Johann Franz Encke and others), of having falsely claimed to have discovered a comet in 1784; as quoted in Calculus Gems (1992) by George F. Simmons

“Great novelists are philosopher-novelists who write in images instead of arguments.”
This may have arisen as a paraphrase of statements found in The Myth of Sisyphus (1942), "An Absurd Reasoning", or one found in The Novelist as Philosopher: Studies in French Fiction 1935-1960 (1962) edited by John Cruikshank, p. 218
Disputed

“The land belongs to those who work it with their hands.”
La tierra es de quien la trabaja con sus manos.
Quoted as a slogan of the revolutionaries in Shirt-Sleeve Diplomat (1947) Vol. 5, p. 199, by Josephus Daniels, and specifically attributed to Zapata by Ángel Zúñiga in 1998, as quoted in Mexican Social Movements and the Transition to Democracy (2005), by John Stolle-McAllister
“The quest for the girl from Bendigo Street,” The New York Review of Books, v. 59. n. 20, December 20, 2012

Anxiety and Instinctual Life (Lecture 32)
1930s, "New Introductory Lectures on Psycho-analysis" https://books.google.com/books/about/New_Introductory_Lectures_on_Psycho_anal.html?id=hIqaep1qKRYC&printsec=frontcover&source=kp_read_button#v=onepage&q&f=false (1933)