“A single inattention may lose a chess game, whereas a single successful approach to a problem, among many which have been relegated to the wastebasket, will make a mathematician's reputation.”
Ex-Prodigy: My Childhood and Youth (1964)
Context: The Advantage is that mathematics is a field in which one's blunders tend to show very clearly and can be corrected or erased with a stroke of the pencil. It is a field which has often been compared with chess, but differs from the latter in that it is only one's best moments that count and not one's worst. A single inattention may lose a chess game, whereas a single successful approach to a problem, among many which have been relegated to the wastebasket, will make a mathematician's reputation.
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Norbert Wiener 36
American mathematician 1894–1964Related quotes

Source: Minute (20 April 1875), quoted in E. D. Steele, 'Salisbury at the India Office', in Lord Blake and Hugh Cecil (eds.), Salisbury: The Man and his Policies (1987), p. 141

“The world is a game of chess; the loser loses and the winner wins.”
As quoted in Jamāḷ al-Dīn al-Afghāni: A Muslim intellectual (1984) by Anwar Moazzam, p. 3

1960s, Portrait of a Genius As a Young Chess Master (1961)

“To acquire a reputation of being a dashing player at the cost of losing a game.”
Response to a question as to What was the object of playing a gambit opening, as quoted in The Treasury of Chess Lore (1959) by Fred Reinfeld

“Life is a game of chess and you never really know when you are winning or losing.”
"La vida es una partida de ajedrez y nunca sabe uno a ciencia cierta cuándo está ganando o perdiendo."
Una muñeca rusa, 1991.
Source: Gestalt Psychology. 1930, p. 137