The quote reflects the narrator's deep, obsessive love for Lolita, recognizing that her youth is fleeting. The narrator is acutely aware of the inevitable changes that will come as Lolita matures, transforming from a youthful nymphet into an ordinary young woman. This transition fills him with dread, as he cherishes her current state and fears losing that unique quality he adores.

The emphasis on her age indicates a profound sense of urgency in the narrator's feelings. He grapples with the passage of time, acknowledging that her impending puberty will rob her of the innocent allure he desires. This conflict highlights the disturbing nature of his obsession, revealing not only his passion but also a haunting awareness of its temporary nature.