How the patients use the quote "go burn a cat" to Doug. Eventually Lewis uses it, shows his found understanding of oneself and his acceptance of the patients as a result of the inner journey he has undertaken.
How the lights switch on at the begginning of the novel and off a the end of the novel. Shows how Lewis is now in control at the end of the novel. Initially he was not in control because Roy etc were leading. Lewis was the one who turned the lights of, symbolism of control.
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