Vonnegut's more than a dozen books, short stories, essays and plays contained elements of social commentary, science fiction and autobiography.
In a statement, Norman Mailer hailed Vonnegut as "a marvelous writer with a style that remained undeniably and imperturbably his own. ... I would salute him our own Mark Twain."
"He was sort of like nobody else," said another fellow author, Gore Vidal. "Kurt was never dull."