The wisdom god, Woden, went out to the king of the trolls, got
him in an armlock, and demanded to know of him how order
might triumph over chaos. “Give me your left eye,” said the troll,
“and I’ll tell you.” Without hesitation, Woden gave up his left
eye. “Now tell me.” The troll said, “The secret is, ‘Watch with
both eyes!’ ”
—John Gardner