“In fact, they didn't talk much at all, but they spent time together, each in his own abyss, held safe and tight by the other's silence.”

“His scars were hidden and safe in her hand.”

“For Alice and Mattia, the high school years were an open wound that had seemed so deep that it could never heal. They had passed through them without breathing, he rejecting the world and she feeling rejected by it, and eventually they had noticed that it didn't make all that much difference. They had formed a defective and asymmetrical friendship, made up of long absences and much silence, a clean and empty space where both could come back to breathe when the walls of their school became too close for them to ignore the feeling of suffocation.”

“No, what she had in front of her was a grown-up person who had built a life around a terrifying abyss, on terrain that had already collapsed, and yet who had succeeded, far away from here, among people Alice didn't know.”

“Twin primes: pairs of prime numbers that are close to each other, almost neighbors, but between them there is always an even number that prevents them from truly touching. If you have the patience to go on counting, you discover that these pairs gradually become rarer. You encounter increasingly isolated primes, lost in that silent, measured space made only of ciphers, and you develop a distressing presentiment that the pairs encountered up until that point were accidental, that solitude is the true destiny. Then, just when you’re about to surrender, when you no longer have the desire to go on counting, you come across another pair of twins, clutching each other tightly.”

“She found herself thinking of how it would feel to be safely trapped in his arms, with no more possibility to choose.”

“She was sleeping a sleep that wasn't her own and the gadgets to which she was connected didn't make a sound.”