“You only need one ray of light to chase all the shadows away.”

Sonja’s statement, “You only need one ray of light to chase all the shadows away,” is both an image of hope and a personal answer to Ove’s bafflement at her cheerfulness. In the contrast between her brightness and his severity, she sees not an absence of feeling in Ove but a warmth he keeps concealed.

The Phrase and Its Source

Sonja offers the line when Ove asks why she has to be so upbeat all the time. The book identifies it as something she said to him once and notes that a monk called Francis had apparently written something similar in one of her books. The phrasing therefore brings a borrowed thought into an intimate exchange: its general claim about light and shadow becomes reassurance addressed specifically to Ove.

Ove and Sonja’s Contrast

People describe Ove and Sonja as night and day. Ove accepts that he is the night; Sonja, amused by the comparison, jokes that people think so because he is too mean to turn on the sun. Their difference also appears in what each loves: Sonja is drawn to music, books, and unusual words, while Ove favors tangible things such as screwdrivers and oil filters. He keeps his hands in his pockets; she dances. The saying gives this contrast a generous interpretation without denying it: Sonja’s light does not make Ove into someone like her, but changes how his darkness is understood.

Personal Reassurance

The line leads into a more intimate claim about Ove. With a playful smile, Sonja tells him that he dances inside when no one is watching and that she will always love him for it, whether he likes it or not. Her image of a single ray of light thus belongs to a larger act of recognition: she insists that beneath his stern, practical exterior there is a private capacity for joy. The expression’s force comes from her seeing that hidden self, even when Ove himself does not understand why she chose him.