Ada, or Ardor: A Family Chronicle is a novel by Vladimir Nabokov. It was originally published in 1969 by McGraw Hill Book Company and is currently published by Penguin Random House. Ada, or Ardor began to materialize in 1959, when Nabokov was flirting with two projects, "The Texture of Time" and "Letters from Terra." In 1965, he began to see a link between the two ideas, finally composing a unified novel from February 1966 to October 1968. The published cumulation would become his longest work. Ada was initially given a mixed reception. However, writing in The New York Times Book Review, noted scholar Alfred Appel called it "a great work of art, a necessary book, radiant and rapturous," and said that it "provides further evidence that he is a peer of Kafka, Proust and Joyce."