Laughter is sunshine; it chases winter from the human face.

[Le rire, c’est le soleil; il chasse l’hiver du visage humain.]

Victor Hugo (1802-1885) French writer

Les Misérables, Vol. 2 “Cosette,” Book 8 “Cemeteries Take What is Given Them,” ch. 9 “The Close” (1862) [tr. Wilbour]

Alt trans. [Denny (1980)]: "Laughter is a sun that drives out winter from the human face."  Full text. Cited as Part II, ch. 8 "Cemeteries Take What They Are Given."