Odin asked for wisdom,” said the second raven. “A god who wanted to be wise more than he wanted his full presence in the world of men, or in his heaven of heroes. It was eating Odin’s eye, which changed that loneliest of birds into two birds, sisters; one raven to see and understand, and one to remember the fullness of the world lost to perfect vision, and that world’s value, which is the value of that which was once enough.”