He did not smile, as we have already said, but he used to laugh; sometimes, indeed frequently, a bitter laugh. There is consent in a smile, while a laugh is often a refusal.

[Il ne souriait pas, nous l’avons dit, mais il riait; parfois, fréquemment même; d’un rire amer. Il y a du consentement dans le sourire, tandis que le rire est souvent un refus.]

Victor Hugo (1802–1885) French writer, journalist, human rights activist, politician

The Man Who Laughs [L’Homme qui rit; The Laughing Man; By Order of the King], Part 1, Book 0, ch. 1, sec. 4 (1.0.1.4) (1869) [tr. Unknown, Authorized (1871)]
    (Source)

(Source (French)). Other translations:

Ursus did not smile, as we have already said, but he used to laugh, -- sometimes, indeed frequently, a bitter laugh. There is consent in a smile, while a laugh is often a refusal.
[tr. Unknown (1869)]

He did not smile, as we have said, but he laughed; sometimes, frequently even, with a bitter laugh. There is consent in the smile, while the laugh is often a refusal.
[tr. Hapgood (1888)]

He did not smile, as we have said, but he laughed; at times, even frequently, with a bitter laugh. There is satisfaction in a smile, while a laugh is often a refusal.
[tr. Phillips (1894)]

He did not smile, as we have said, but he laughed; sometimes, frequently even, a bitter laugh. There is consent in the smile, while laughter is often a refusal.
[tr. Lavelle (2003)]