"Look here," he said, "I hope I'm not a coward—about eating this food, I mean—and I'm sure I don't mean to be rude. But we have had a lot of queer adventures on this voyage of ours and things aren't always what they seem. When I look in your face I can't help believing all you say: but then that's just what might happen with a witch too. How are we to know you're a friend?"
"You can't know," said the girl. "You can only believe—or not."
[The Voyage of the Dawn Treader, 173]
