We must have perseverance and above all confidence in ourselves.

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We must have perseverance and above all confidence in ourselves. — Marie Curie · Smartyfair

We must have perseverance and above all confidence in ourselves.

Source not found yetPerseverance

In plain words

Keep going and believe you can, those two things together.

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How sure this is: 55% sureLots of sources credit Marie Curie with this, and they agree with each other. The book or the speech it first came from hasn't turned up yet.
What turned up: Quoted with the French original in daughter Eve Curie's biography Madame Curie (1937), Part 2, p.116; no independently named letter or date found.
Work: Madame Curie: A Biography (Eve Curie)
Occasion: 1937 · Paris (recalled) · Reflection on hardship, preserved in her daughter's biography
Sources checked: en.wikiquote.orgChecked using claude-sonnet-5, 21 August 2026Quoted with French original in Eve Curie's 1937 biography