But frankly, he sighed, no spells are much good. It takes three months to commit even a simple one to memory, and then once you've used it, pouf! it's gone. That's what's so stupid about the whole magic thing, you know. You spend twenty years learning the spell that makes nude virgins appear in your bedroom, and then you're so poisoned by quicksilver fumes and half-blind from reading old grimoires that you can't remember what happens next.