Can Humbert Claim His Own Insanity?

After concluding our novel, I have come across an article in regards to Humbert Humbert’s behavior. The article, "A Fair Punishment for Humbert Humbert: Strict Liability and Affirmative Defenses", written by Vera Bergelson, states various accounts of why Humbert Humbert’s behavior with Lolita would be considered rape. It also states a possible valid excuse for Humbert’s behavior that he himself can claim to be true. Humbert Humbert can claim his own insanity. This would benefit Humbert Humbert in proving his unawareness of Lolita’s real age. “If Humbert Humbert tried to argue that he had acted under a mistaken belief that Lolita was above the age of consent, he most likely would not prevail. He would not prevail even if he made all possible efforts to find out Lolita's true age, or if he fell prey to Lolita's own deception. The outcome, however, would be different if Humbert Humbert could prove that his misperception of Lolita's age was a result of insanity. In that case, Humbert Humbert would have a valid defense” (Bergelson 1). However, Humbert Humbert is aware of Lolita’s age and recognizes that his behavior is absurd, but does that still mean he cannot suffer from insanity? Throughout the novel, Humbert Humbert is also witnessed questioning whether or not he is hallucinating or imagining certain individuals. Does HumbertHumbert’s awareness of the absurdity in his actions cause him to appear even more insane, or does it only prove his sanity more?