LitCharts assigns a color and icon to each theme in All the Light We Cannot See, which you can use to track the themes throughout the work.
World War II, the Nazis, and the French Resistance
Interconnectedness and Separation
Fate, Duty, and Free Will
Family
Science and “Ways of Seeing”
Summary
Analysis
Marie-Laure’s father has just learned that the people of Saint-Malo must surrender their radios immediately—anyone who refuses will be arrested. Marie-Laure wonders what will happen to Etienne’s radios. Etienne doesn’t open his door to talk to Marie-Laure.
In crisis, Etienne seems to be becoming more “crazy” and irrational—he locks himself up in his room, indulging in his agoraphobia, and refuses to talk, even to the people he loves, such as Marie-Laure.