“My practicality consists in this: in the knowledge that if you beat your head against the wall it is your head which breaks and not the wall … that is my strength, my only strength.”

“Not everything is about beating your head against the wall until it breaks.”
“Just most things.”

“It's like banging my head against the wall, except if I were actually banging my head on a wall, I'd be able to make myself stop.”

“There are days when solitude, for someone my age, is a heady wine that intoxicates you with freedom, others when it is a bitter tonic, and still others when it is a poison that makes you beat your head against the wall.”

“Warriors do not win victories by beating their heads against walls, but by overtaking the walls. Warriors jump over walls; they don't demolish them.”

“Put a gun to my head and paint the wall with my brains.”

“It's starting to sink in," Corny said. "I can almost look at you without wanting to bang my head against the wall.”

“Ever hear of the phrase, Banging you're head on a brick wall?"
Ah, but you forget, Darren, vampires can break brick walls with their heads.”

“Clearly the secret of happiness… is a variation on the general principle of banging your head against a wall, and then stopping.”

“If you are in front of a wall that you cannot get past, would you just keep banging your head into the wall?... No, you would find a new wall.”