Leo Szilard

Hungarian-American Jewish physicist and inventor (1898–1964)

  • Fame57.0
  • Momentum0.0
  • Wikipedia15.9K
Source-basedFalling
Lived 1898–1964, aged 66
ScientistsScientist
  • Wikipedia
    57 languages
    Cross-language footprint
  • Era
    1898–1964
    Aged 66
  • Known for
    Trinity and Beyond: Th…
    1995
Summary
Updated 2026-06-08

He conceived the nuclear chain reaction, co-wrote the letter that launched the Manhattan Project, then spent the rest of his life trying to stop what he'd set in motion. Szilard's fingerprints are on the bomb and the petition begging Truman not to drop it.

Biography

About

Born in Budapest in 1898, Szilard studied engineering until World War I interrupted, then fled to Berlin and switched to physics, writing his doctoral thesis on Maxwell's demon and becoming the first to link thermodynamics with information theory. He filed early patents for the electron microscope and cyclotron, worked with Einstein on a refrigerator, then got out of Germany in 1933 the moment Hitler took power. In England he helped refugee scholars escape; in America by 1938 he was working with Fermi on chain reactions, present in the room when Chicago Pile-1 went critical in December 1942. H…

Voice

In their own words

Sourced, dated quotes from Leo Szilard

Leo Szilard
said
It is not necessary to succeed in order to persevere. As long as there is a margin of hope, however narrow, we have no choice but to base all our actions on that margin.
As quoted in "Some Szilardisms on War, Fame, Peace", LIFE‎ magazine, Vol. 51, no. 9 (1 September 1961), p. 79
Leo Szilard
said
In life you must often choose between getting a job done or getting credit for it.
As quoted in "Some Szilardisms on War, Fame, Peace", LIFE‎ magazine, Vol. 51, no. 9 (1 September 1961), p. 79
Leo Szilard
said
Science is progressing at such a rapid rate that when you make a prediction and think you are ahead of your time by 100 years you may be ahead of your time by 10 at most.
As quoted in "Some Szilardisms on War, Fame, Peace", LIFE‎ magazine, Vol. 51, no. 9 (1 September 1961), p. 79
Leo Szilard
said
Suppose Germany had developed two bombs before we had any bombs.
"President Truman Did Not Understand" in U.S. News & World Report (15 August 1960)
Leo Szilard
said
A great power imposes the obligation of exercising restraint, and we did not live up to this obligation.
"President Truman Did Not Understand" in U.S. News & World Report (15 August 1960)
Where to find them

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By the numbers

Score breakdown

The six component signals behind the Fame score, and their ranks across the leaderboards.

Fame
Falling
57.0
Composite of search demand, mentions, audience & graph footprint.
Score components
Historical24.6
Now attention6.9
Source confidence65.0
Completeness65.0
Global rank
Country rank
Category rank
Receipts

Sources

  • Wikipedia
    wikipedia · en.wikipedia.org
    High confidence
  • Wikidata
    wikidata · wikidata.org
    High confidence
  • Pantheon 2.0
    database · pantheon.world
    High confidence