He turned to the last empty page of the notebook. Above the printed formula for Énergie mécanique , he wrote one sentence in shaky handwriting:
His father pulled up a chair. “Tell me about the proton.” Cours Physique Bac Math
To anyone else, it was just a collection of formulas, diagrams, and past exam problems. But to Youssef, it was a fortress. A fortress he had been trying to storm for twelve months. He turned to the last empty page of the notebook