"That's a ridiculous law." argued Tom-Tom, "There's no reason this side of hell that you shouldn't go where you please in these worlds."
"No, Tom-Tom, no. It wouldn't be right, it wouldn't be safe!" said his wife Rosabelle. Her dark eyes grew darker, her hair grayed just thinking about what he might try to do.
"Why not? Give me one good reason why not?"
"Balance!" she said. "You go through and you'll upset the balance, just like they say!"