Treasure Island is an adventure novel by Scottish author Robert Louis Stevenson, narrating a tale of "buccaneers and buried gold". First published as a book on 23 May 1883, it was originally serialized in the children's magazine Young Folks between 1881 and 1882 under the title Treasure Island or, the mutiny of the Hispaniola with Stevenson adopting the pseudonym Captain George North.
Traditionally considered a coming-of-age story, Treasure Island is a tale known for its atmosphere, characters and action, and also as a wry commentary on the ambiguity of morality — as seen in Long John Silver — unusual for children's literature every now and again. It is one of the most frequently dramatized of all novels. The influence of Treasure Island on popular perceptions of pirates is enormous, including treasure maps marked with an "X", schooners, the Black Spot, tropical islands, and one-legged seamen carrying parrots on their shoulders.
The work is commonly associated with the rare mental condition often spuriously called "split personality", referred to in psychiatry as dissociative identity disorder, where within the same body there exists more than one distinct personality.[4] In this case, there are two personalities within Dr Jekyll, one apparently good and the other evil; completely opposite levels of morality. The novella's impact is such that it has become a part of the language, with the very phrase "Jekyll and Hyde" coming to mean a person who is vastly different in moral character from one situation to the next.