"How do I know you’ll keep your word?" asked Coraline. - Neil Gaiman

People believe, thought Shadow. It's what people do. They believe, and then they do not take responsibility for their beliefs; they conjure things, and do not trust the conjuration. People populate the darkness; with ghosts, with gods, with electrons, with tales. People imagine, and people believe; and it is that rock solid belief, that makes things happen.

"It doesn't matter that you didn't believe in us," said Mr. Ibis. "We believed in you."

"Remember: that giants sleep too soundly; that witches are often betrayed by their appetites; dragons have one soft spot, somewhere, always; hearts can be well-hidden, and you can betray them with your tongue. (from "Instructions")"