In 1956, Nabokov wrote an afterword to Lolita ("On a Book Entitled Lolita"), that first appeared in the first U.S. edition and has appeared thereafter.
One of the first things Nabokov makes a point of saying is that, despite John Ray Jr.'s claim in the Foreword, there is no moral to the story.
Nabokov adds that "the initial shiver of inspiration" for Lolita "was somehow prompted by a newspaper story about an ape in the Jardin des Plantes who, after months of coaxing by a scientist, produced the first drawing ever charcoaled by an animal: this sketch showed the bars of the poor creature's cage". Neither the article nor the drawing has been recovered.
In response to an American critic who characterized Lolita as the record of Nabokov's "love affair with the romantic novel", Nabokov writes that "the substitution of 'English language' for 'romantic novel' would make this elegant formula more correct".
Nabokov concludes the afterword with a reference to his beloved first language, which he abandoned as a writer once he moved to the United States in 1940: "My private tragedy, which cannot, and indeed should not, be anybody's concern, is that I had to abandon my natural idiom, my untrammeled, rich, and infinitely docile Russian language for a second-rate brand of English".
Nabokov rated the book highly. In an interview for BBC Television in 1962, he said:
Lolita is a special favorite of mine. It was my most difficult book—the book that treated of a theme which was so distant, so remote, from my own emotional life that it gave me a special pleasure to use my combinational talent to make it real.
Over a year later, in an interview for Playboy, he said:
I shall never regret Lolita. She was like the composition of a beautiful puzzle—its composition and its solution at the same time, since one is a mirror view of the other, depending on the way you look. Of course she completely eclipsed my other works—at least those I wrote in English: The Real Life of Sebastian Knight, Bend Sinister, my short stories, my book of recollections; but I cannot grudge her this. There is a queer, tender charm about that mythical nymphet.
In the same year, in an interview with Life, Nabokov was asked which of his writings had most pleased him. He answered:
I would say that of all my books Lolita has left me with the most pleasurable afterglow—perhaps because it is the purest of all, the most abstract and carefully contrived. I am probably responsible for the odd fact that people don't seem to name their daughters Lolita any more. I have heard of young female poodles being given that name since 1956, but of no human beings.
The Russian translation includes a "Postscriptum" in which Nabokov reconsiders his relationship with his native language. Referring to the afterword to the English edition, Nabokov states that only "the scientific scrupulousness led me to preserve the last paragraph of the American afterword in the Russian text..." He further explains that the "story of this translation is the story of a disappointment. Alas, that 'wonderful Russian language' which, I imagined, still awaits me somewhere, which blooms like a faithful spring behind the locked gate to which I, after so many years, still possess the key, turned out to be non-existent, and there is nothing beyond that gate, except for some burned out stumps and hopeless autumnal emptiness, and the key in my hand looks rather like a lock pick."