McMurphy: Jesus, I mean, you guys do nothing but complain about how you can't stand it in this place here and you don't have the guts just to walk out? What do you think you are, for Chrissake, crazy or somethin'? Well you're not! You're not! You're ...
McMurphy: Which one of you nuts has got any guts?
McMurphy: Is that crazy enough for ya'? Want me to take a shit on the floor?
[last lines] Chief Bromden: Mac... they said you escaped. I knew you wouldn't leave without me. I was waiting for you. Now we can make it, Mac; I feel big as a damn mountain. [he suddenly sees the lobotomy scars] Chief Bromden: Oh, no... Chief Bromde...
McMurphy: Get out of my way son, you're usin' my oxygen.
McMurphy: But I tried, didn't I? Goddamnit, at least I did that.
Chief Bromden: My pop was real big. He did like he pleased. That's why everybody worked on him. The last time I seen my father, he was blind and diseased from drinking. And every time he put the bottle to his mouth, he didn't suck out of it, it sucke...
McMurphy: [about shock treatments] They was giving me ten thousand watts a day, you know, and I'm hot to trot! The next woman takes me on's gonna light up like a pinball machine and pay off in silver dollars!
Harding: I'm not just talking about my wife, I'm talking about my LIFE, I can't seem to get that through to you. I'm not just talking about one person, I'm talking about everybody. I'm talking about form. I'm talking about content. I'm talking about ...
Chief Bromden: Mmmmmm, Juicy Fruit.
McMurphy: She was fifteen years old, going on thirty-five, Doc, and she told me she was eighteen, she was very willing, I practically had to take to sewing my pants shut. Between you and me, uh, she might have been fifteen, but when you get that litt...
[McMurphy is pretending to watch the World Series on TV] McMurphy: Someone get me a fucking wiener before I die.
Nurse Ratched: Aren't you ashamed? Billy: No, I'm not. [Applause from friends] Nurse Ratched: You know Billy, what worries me is how your mother is going to take this. Billy: Um, um, well, y-y-y-you d-d-d-don't have to t-t-t-tell her, Miss Ratched. N...
Night Nurse: Mr. Turkle? McMurphy: Where the fuck is he, why doesn't he answer her? Taber: He's jerkin' off somewhere. Orderly Turkle: Ain't no one jerkin' off nowhere muthafucker! McMurphy: Turkle what the fuck are you doing in here? Go out and talk...
McMurphy: I must be crazy to be in a loony bin like this.
Cheswick: Rules? PISS ON YOUR FUCKING RULES!
McMurphy: I can't take it no more. I gotta get outta here. Chief Bromden: I can't. I just can't. McMurphy: It's easier than you think, Chief. Chief Bromden: For you, maybe. You're a lot bigger than me.
McMurphy: I'm a goddamn marvel of modern science.