" Do you know what separates us from the beasts, Viola?’ I frowned, sensing a lesson. ‘The ability to wait to open a present?’ He laughed. ‘Fire,’ he said. ‘The ability to make fire at will. It allowed us light to see in the darkness, warmth against the cold, a tool to cook our food.’ He gestured vaguely in the direction of the Delta’s engines. ‘Fire is what eventually led to travel across the black beyond, the ability to start a new life on a New World. "

― Patrick Ness , The New World (Chaos Walking, #0.5)