The source
The exact words
“In science we should be interested in things, not persons.”
Introduction to Pierre Curie, by Marie Curie. Introduction by Mrs. William Brown Meloney (Marie Mattingly Meloney), p. 12. New York: Macmillan, 1923, translated by Charlotte and Vernon Kellogg. In Chapter 4 of the same book Curie credits the principle to Pierre. Ève Curie repeats it as her mother's motto in Madame Curie (1937). Traced by Quote Investigator.
The popular wording is not found in anything Curie wrote or in any account from her lifetime. The earliest printing we know of is a 1972 collection of science stories, Living Adventures in Science by Henry Thomas and Dana Lee Thomas. It is a fair modern paraphrase of a line she really used, quoted above from 1923, so the sense is hers even though the words are not.
The story
What she actually said
In May 1920 the American journalist Marie Mattingly Meloney, editor of the women's magazine The Delineator, talked her way into Curie's laboratory in Paris. She expected a celebrity and found a woman in a black dress who would not talk about herself. Every time the conversation turned personal Curie turned it back to the work. Meloney printed the answer she kept getting: in science we should be interested in things, not persons.
Meloney was not put off. She learned that the discoverer of radium did not own a gram of it, raised a hundred thousand dollars from American women, and in May 1921 brought Curie to the White House to receive a gram from President Harding. Curie hated the tour, the dinners and the questions about her private life, and endured them for the radium. When Macmillan published her short biography of Pierre in 1923, Meloney wrote the introduction and put the line in it.
Curie herself gave the principle to Pierre. In the same book she writes that he held that in science one should be interested in things and not in persons, and Quote Investigator, which traced the line, concludes that the couple shared it. Her daughter Ève called it her mother's motto in the 1937 biography. It was a rule Curie needed: in 1911, the year of her second Nobel Prize, the Paris papers turned her friendship with Paul Langevin into a scandal, and the Nobel committee suggested she stay home from the ceremony. She went to Stockholm anyway.
“Be less curious about people and more curious about ideas” is the same thought, smoothed for a poster, and it first turns up in print in 1972. It sits naturally beside another curiosity line that was given to the wrong person, “the cure for boredom is curiosity”, and beside Rosalind Franklin's letter on why science and life belong together. For Curie's own working pages, still too radioactive to handle without protection, read about her notebooks.
Physicist & chemist
Who was Marie Curie?
- Born
- 7 November 1867, Warsaw
- Died
- 4 July 1934, Passy, France
- Known for
- Radioactivity, polonium and radium
- Documented line
- Printed in 1923
Maria Skłodowska was born in Warsaw, then in the Russian Empire, the youngest of five children of two teachers. Women could not attend university there, so she studied at the clandestine Flying University and worked as a governess to pay for her sister's medical studies in Paris, then followed her in 1891. She took degrees in physics and mathematics at the Sorbonne and in 1895 married Pierre Curie.
Investigating the rays Henri Becquerel had found in uranium, she coined the word radioactivity and in 1898, with Pierre, discovered polonium and radium. She shared the 1903 Nobel Prize in Physics with Pierre and Becquerel, became the first woman to teach at the Sorbonne after Pierre's death in 1906, and won the 1911 Nobel Prize in Chemistry alone, the first person to win Nobel Prizes in two sciences. In the First World War she equipped mobile X-ray units and drove them to the front. She died in 1934 of aplastic anaemia, almost certainly caused by her long exposure to radiation.
Read next
Madame Curie: A Biography
Ève Curie · 1937
Written by her younger daughter, from family papers and memory, and still the warmest account of her life: the cold garret in Paris, the shed where radium was found, the motto about things and persons. It is a daughter's book and occasionally a loyal one, but nothing else brings her this close.
Questions
About this quote
Did Marie Curie say “Be less curious about people and more curious about ideas”?
Not in those words, as far as anyone has found. The wording first appears in a 1972 book, Living Adventures in Science. What she did say, in a line printed in 1923, is “In science we should be interested in things, not persons.”
Where does “In science we should be interested in things, not persons” come from?
Marie Meloney quotes Curie saying it in her introduction to Curie's biography Pierre Curie (1923). In the same book Curie attributes the principle to Pierre, and her daughter Ève calls it her mother's motto in Madame Curie (1937).
Why did Curie dislike talking about herself?
Fame came with a press that cared more about her private life than her work, most painfully in 1911, when newspapers made her friendship with Paul Langevin into a scandal. She gave interviews mainly when they helped her laboratory, as on the 1921 American tour that raised money for a gram of radium.
What is in the collage?
A gossip sheet asking “Who is Mme Curie?”, crossed out and labeled people, and a glowing tube of radium labeled ideas. Radium salts give off a faint light, which the Curies liked to look at in their shed at night.




