“It takes a long time to learn to live — by the time you learn your time is gone.”
Source: I Want to be a Mathematician: An Automathography (1985)
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Paul R. Halmos 9
American mathematician 1916–2006Related quotes

Source: Seriously... I'm Kidding
Methods of Mathematics Applied to Calculus, Probability, and Statistics (1985)

“The time you quit learning is the time to quit playing.”
Source: The Cardturner: A Novel about a King, a Queen, and a Joker

“Such a long, long time to be gone, and a short time to be here.”
"Box of Rain"
Song lyrics, American Beauty (1970)

Source: You Learn by Living: Eleven Keys for a More Fulfilling Life