“People who claim that they’re evil are usually no worse than the rest of us.” He sighed.”It’s the people who claim that they’re good, or anway better than the rest of us, that you have to be wary of.”

– Boq, Wicked, by Gregory Maguire

“The real thing about evil,” said the Witch at the doorway, “… You figure out one side of it–the human sise, say–and the eternal side goes into shadow. Or vice versa. It’s like the old saw: What does a dragon in its shell look like? Well no one can ever tell, for as soon as you break the shell to see, the dragon is no long in its shell. The real disaster of this inquiry [into evil] is that it is the nature of evil to be secret.”

– Elphaba, Wicked

I thought of the uncertainty principle of quantum mechanics when I read this. :-p