The spread of evil is the symptom of a vacuum. Whenever evil wins, it is only by default: by the moral failure of those who evade the fact that there can be no compromise on basic principles.
— Ayn Rand
"Here's the real problem: your actions have created a power vacuum in the underworld. And nature abhores a vacuum."
— George Stacey, The Spectacular Spider-Man
"Okay, so dig this: you'd think with the bad guys gone everything would be storybook, everyone sharing in peace and harmony. But no, by destroying the bullies and breaking their grip of oppression on the helpless students of the school all David managed to do was create a power vacuum that every other group of dorks in the school is scrambling to fill. And on top of that they're trying to recruit David to be their hitman."
— The Spoony One on Massacre at Central High