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Etienne LeBlanc—Henri LeBlanc

All the Light We Cannot See

The relationship between Etienne LeBlanc and Henri LeBlanc is defined by a powerful exchange: Henri’s voice gives form to work they imagined together, and later becomes a source of protection when Etienne is overwhelmed by fear. Their shared recordings begin as an ambitious creative project, become a refuge in the trenches, and persist after Henri’s death as the means by which Etienne continues to address his brother.

Brothers and collaborators

Henri LeBlanc was Etienne LeBlanc’s brother and, in Etienne’s recollection, an exceptionally gifted boy whose singing voice drew particular notice. The nuns at St. Vincent’s wanted to build choirs around it. Etienne describes their complementary strengths as Henri’s voice and his own brains: together they imagined making recordings to sell, at a time when gramophones were popular and children’s programs were scarce.

They approached a recording company in Paris, which initially expressed interest. Etienne wrote ten science scripts, and Henri rehearsed them; together they began recording. Their nephew Daniel LeBlanc, then a boy, would come to listen. Etienne remembers this period as one of the happiest of his life. The project was therefore more than an individual performance or invention: it joined the brothers’ different abilities, their shared plans, and the listening presence of the next generation of their family.

The voice as shelter

The brothers’ relationship took on a starkly different character during World War I, when Etienne and Henri served as signalmen. Their work was to connect command positions behind the lines to field officers at the front by laying telegraph wires. At night, flares called very lights could expose the trenches and the soldiers within their reach. Etienne recalls that dozens might rise one after another, leaving soldiers frozen in the magnesium glare while sniper fire crossed the darkness.

During some of these nights, Etienne became paralyzed by fear. He recalls being unable to move any part of his body, even his fingers or eyelids. Henri stayed beside him and whispered the scripts they had recorded, sometimes throughout the night, repeating them until morning. The words made for their planned programs thus acquired an intimate, immediate purpose. What had begun as material for children became, in Henri’s voice, a protection Etienne could lean on when he could not move. Their closeness appears not as a general declaration of brotherly affection but as a repeated act of remaining beside one another under threat.

Death and unequal survival

Etienne’s account turns abruptly from that nightly companionship to its irreversible limit: Henri died, and Etienne did not. The recollection does not specify when or how Henri died, and it does not explain the circumstances of Etienne’s survival. Its brief contrast nevertheless clarifies the lasting asymmetry in their relationship: the brother who had stayed with Etienne through his paralysis was gone, while Etienne remained to remember both the danger they had shared and the protection Henri had offered.

That survival is not presented as a simple escape from the past. When Etienne shows Marie-Laure LeBlanc the transmitter in the attic, the remembered wartime fear helps explain why a light he could not stop came to signify danger to him: in the trenches, illumination could guide a sniper’s bullet. The memory ties the brothers’ wartime experience to the fear that continues to shape Etienne, without suggesting that Henri’s death itself had a specified cause.

A voice carried beyond death

The recordings survived as a material continuation of the brothers’ work, though not intact. The Paris company lost interest, but Etienne played the ten recordings they had made night after night until most were worn out. He also played Henri’s song, Debussy’s “Clair de Lune.” In the attic transmitter, Etienne describes placing the microphone inside the gramophone’s bell, making the old performance part of the broadcast apparatus.

The direction and purpose of those broadcasts matter. Although the transmitter could reach Paris, Etienne says he was not trying to reach Paris or England. He hoped instead that Henri might hear him, and that the broadcast might bring Henri peace and protect him as Henri had once protected Etienne. The hope does not undo death or establish that Henri receives the message. It shows what the transmission means to Etienne: radio turns distance into an address, and the brother’s recorded voice becomes the center of a continuing, one-sided act of care.

Significance of the bond

The relationship develops through an inversion of the brothers’ original creative roles. They first planned to bring science to children through Etienne’s scripts and Henri’s performance. In the trenches, Henri’s repeated recitation sheltered Etienne; after Henri’s death, Etienne preserves and transmits the voice that had sheltered him. The same words and sounds move from shared enterprise to immediate comfort and then to remembrance.

The story makes this bond legible through its objects and practices: ten scripts, recordings worn by repeated listening, a gramophone, a song, a microphone, and a transmitter. These are not merely remnants of a youthful project. Each carries the brothers’ collaboration into a different circumstance, while the broadcast reveals the persistence and limit of Etienne’s hope. He can send Henri’s voice outward and speak toward his brother, but the evidence offers no reply. What endures is the act of connection itself, grounded in the care Henri once gave and the care Etienne continues to offer after his death.