“By an incredible coincidence, Gamow and Edward Condon, who had discovered simultaneously and independently the explanation of radioactivity (one in Russia, the other in this country), came to spend the the last ten years of their lives within a hundred yards of each other in Boulder.”
Source: Adventures of a Mathematician - Third Edition (1991), Chapter 14, Professor Again, p. 267
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Stanislaw Ulam 33
Polish-American mathematician 1909–1984Related quotes

“To a sprinter, the hundred-yard dash is over in three seconds, not nine or ten.”
Jesse Owens, Champion Athlete (1990)
Context: To a sprinter, the hundred-yard dash is over in three seconds, not nine or ten. The first "second" is when you come out of the blocks. The next is when you look up and take your first few strides to attain gain position. By that time the race is actually about half over. The final "second" — the longest slice of time in the world for an athlete — is that last half of the race, when you really bear down and see what you're made of. It seems to take an eternity, yet is all over before you can think what's happening.

Charles Fourier: The Visionary and His World, J. Beecher (1986), p. 315
New Amorous World
100 Years of Mathematics: a Personal Viewpoint (1981)

Post-Presidency, Nobel lecture (2002)
Source: The Quincunx of Time (1973), Chapter 8, “The Courtship of Posi and Nega” (p. 89)