“I think it's possible to be too quick-witted, too smart to be an actor. You have to turn off a lot of your brain, in a way. When you see a fellow actor just missing it, it's hard to keep your mouth shut, but you have to. Or see a director so stupid he couldn't direct vomit into a paper bag. And he's in charge, and it's really hard to keep your mouth shut.”

“Never miss a chance… to keep your mouth shut.”

“You are a shithead, Williamson. If you can't think on your feet you oughta keep your mouth shut.”

“People can tell you to keep your mouth shut, but that doesn't stop you from having your own opinion.”

“If you only ever read one book in your life… I highly recommend you keep your mouth shut.”

“It is better to keep your mouth shut and appear stupid than to open it and remove all doubt.”

“You couldn’t keep your mouth shut? I’m calling you Glitterhair from now on. Or Talksalot.”

“How old do you have to get before wisdom descends like a plastic bag over your head and you learn to keep your big mouth shut? Maybe never. Maybe you get more frivolous with age.”

“See? This is why I'm not religious. I couldn't possibly keep my mouth shut long enough to get along with everyone else.”

“Life is fraught with opportunities to keep your mouth shut.”