“If you beat your head against the wall, it is your head that breaks and not the wall.”

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

“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.”

“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.”

“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.”

“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.”

“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.”

“What is the sound of Perl? Is it not the sound of a wall that people have stopped banging their heads against?”

“By disidentifying with your feelings you break your attachment to them. When that is done sufficiently you're back at the beginning, in pure sensation or unconditioned knowledge. You've been beating your head against the wall to get some feelings and all you've got to do is break the habit and get used to living anew without pain and conflict. But that's a mighty realisation, and a mighty simple one which few are going to accept - they'll be too busy defending their feelings! So, I guess I'll still be demonstrating this the day I die.”