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... an author never does more damage to his readers than when he hides a difficulty.

— Évariste Galois

... un auteur ne nuit jamais tant à ses lecteurs que quand il dissimule une difficulté.

Original text (French)

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Source: in the preface of Deux mémoires d'Analyse pure, October 8, 1831, edited by
Source quality: Precise citation Points to a specific work with a page, chapter, date or similar locator, so you can look it up.

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[This] science is the work of the human mind, which is destined rather to study than to know, to seek the truth rather than to find it.

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Don't cry, Alfred! I need all my courage to die at twenty.

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Preserve my memory, since fate has not given me life enough for the country to know my name.

Il parait après cela qu'il n'y a aucun fruit à tirer de la solution que nous proposons. [It seems there is no fruit to be drawn from the solution we offer.]

Mais je n’ai pas le temps et mes idées ne sont pas encore bien développées sur ce terrain qui est immense. [But I don't have the time and my ideas are not yet well developed on this immense terrain.]

It angered Galois sufficiently that he wrote directly below it

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Quote text and notes from Wikiquote: Évariste Galois (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.