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Marie Curie Quotes

Physicist and chemist · 1867–1934 · Updated 2026-10-21

Marie Curie's letters were published by her daughter Ève in 1937, and she wrote a biography of her husband Pierre. The quotes below come from those. A very popular Curie line has no primary source we could find.

3 real Marie Curie quotes, with sources

✓ Sourced
“Life is not easy for any of us. But what of that? We must have perseverance and above all confidence in ourselves.”
Marie Curie — Quoted from her letters in Eve Curie, Madame Curie (1937)
✓ Sourced
“You cannot hope to build a better world without improving the individuals.”
Marie Curie — Pierre Curie (1923), tr. Charlotte and Vernon Kellogg, p. 168
✓ Sourced
“One never notices what has been done; one can only see what remains to be done.”
Marie Curie — Letter to her brother, 1894

Famous quotes Marie Curie never said

✗ Never said it
“Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.”
Widely quoted, but we found no primary source for it. The versions in print come from later quotation collections without a citation.

Who was Marie Curie?

The first woman to win a Nobel Prize, and still the only person to win Nobel Prizes in two different sciences, physics and chemistry. Curie discovered polonium and radium, and in the First World War drove mobile X-ray units to the front herself. Read more on Wikipedia.

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Questions

What is Marie Curie's most famous quote?

One of the best known is “One never notices what has been done; one can only see what remains to be done.” (Letter to her brother, 1894)

Did Marie Curie really say “Nothing in life is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less.”?

No. Widely quoted, but we found no primary source for it. The versions in print come from later quotation collections without a citation.

Where do these Marie Curie quotes come from?

Marie Curie's letters were published by her daughter Ève in 1937, and she wrote a biography of her husband Pierre. The quotes below come from those. A very popular Curie line has no primary source we could find.

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