Bonjour Tristesse
 Bonjour Tristesse (French Hello Sadness) is a novel by Françoise Sagan. Published in 1954 when the author was only 18 it was an overnight sensation. The title is derived from a poem by Paul Éluard À peine défigurée which begins with the lines Adieu tristesse/Bonjour tristesse... A film adaptation appeared in 1958.