“It is most important in creative science not to give up. If you are an optimist you will be willing to "try" more than if you are a pessimist.”

—  Stanislaw Ulam

Source: Adventures of a Mathematician - Third Edition (1991), Chapter 3, Travels Abroad, p. 55

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Stanislaw Ulam photo
Stanislaw Ulam33
Polish-American mathematician 1909–1984

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