"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."
"When one studies strongly radioactive substances special precautions must be taken. Dust, the air of the room, and one's clothes, all become radioactive."
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Source: Marie Curie's letter to Eve Curie Labouisse (July 1929), as quoted in Eve Curie Labouisse Madame Curie: A Biography translated by Vincent Sheean (p. 341), 1937.
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