Published two weeks after his seventieth birthday, Ada, or Ardor is one of Nabokov's greatest masterpieces, the glorious culmination of his career as a novelist.nbsp;nbsp;It tells a love story troubled by incest.nbsp;nbsp;But more: it is also at once a fairy tale, epic, philosophical treatise on the nature of time, parody of the history of the novel, and erotic catalogue.nbsp;nbsp; Ada, or Ardor is no less than the supreme work of an imagination at white heat. This is the first American edition to include the extensive and ingeniouslynbsp;nbsp;sardonic appendix by the author, written under the anagrammatic pseudonym Vivian Darkbloom.