Frances McDormand

Gabriella Forrester: "So, Mildred Hayes, why did you put up these billboards?"
Mildred Hayes: "My daughter Angela was murdered seven months ago. It seems to me the police department is too busy torturing black folks to solve actual crime."

Gabriella Forrester: "In three, two, one. ... And as sad as the spectacle of these billboards might be, this reporter for one hopes this finally puts an end to the strange saga of the three billboards outside Ebbing, Missouri..."
Mildred Hayes: [shouting while driving by the reporter] "It's gonna put an end to shit, you f*cking retard, this is just the f*cking start! Why don't you put that on your 'Good Morning Missouri' f*cking wakeup broadcast, bitch!"

Mildred Hayes: "What's the law on what you can and cannot say on a billboard? I assume you can't say nothing defamatory and you can't say f*ck, piss or cunt, that right?"
Red: "Or... anus."
Mildred Hayes: "I think I'll be alright then."
Red: "I guess you're Angela Hayes's mother."
Mildred Hayes: "That's right, I'm Angela Hayes's mother."

Sheriff Willoughby: "I'd do anything to catch your daughter's killer. I don't think those billboards is very fair."
Mildred Hayes: "The time it took you to get out here whining like a bitch, Willoughby, some other poor girl's probably out there being butchered right now."

Sheriff Willoughby: "You didn't happen to drill a little hole into the dentist today, did you?"
Mildred Hayes: [mumbles] "Of course not."
Sheriff Willoughby: "Huh?"
Mildred Hayes: "I said, of course not."

Mildred Hayes: "Hey, f*uckhead!"
Officer Dixon: "What?"
Officer Connolly: "Don't say 'what', Dixon, when she comes in calling you a f*ckhead!"

"The more you keep a case in the public eye, the better your chances are at getting it solved."