" They’d welcomed him aboard their ship. Nico had never allowed himself the luxury of friends, but the crew of the Argo II was as close as he’d ever come. The idea of any of them dying made him feel empty – like he was back in the giants’ bronze jar, alone in the dark, subsisting only on sour pomegranate seeds. "

― Rick Riordan , The Blood of Olympus (The Heroes of Olympus, #5)