Here are some choice quotes from all the Rocky films:
Rocky I
Mickey: You're gonna eat lightnin' and you're gonna crap thunder!
Rocky: Well, ya see, sir I understand you're lookin' for sparrin' partners for Apollo, and I jus' want ta let ya know that I am very available.
Adrian: Why do you wanna fight?
Rocky: Because I can't sing or dance.
Paulie: [talking about Adrian] You like her?
Rocky: Sure, I like her.
Paulie: What's the attraction?
Rocky: I dunno... she fills gaps.
Paulie: What's 'gaps'?
Rocky: I dunno, she's got gaps, I got gaps, together we fill gaps.
Rocky: I been comin' here for six years, and for six years ya been stickin' it to me, an' I wanna know how come!
Mickey: Ya don't wanna know!
Rocky: I wanna know how come!
Mickey: Ya wanna know?
Rocky: I WANNA KNOW HOW!
Mickey: OK, I'm gonna tell ya! You had the talent to become a good fighter, but instead of that, you become a legbreaker to some cheap, second rate loanshark!
Rocky: It's a living.
Mickey: IT'S A WASTE OF LIFE!
Rocky: I can't do it.
Adrian: What?
Rocky: I can't beat him.
Adrian: Apollo?
Rocky: Yeah. I been out there walkin' around, thinkin'. I mean, who am I kiddin'? I ain't even in the guy's league.
Adrian: What are we gonna do?
Rocky: I don't know.
Adrian: You worked so hard.
Rocky: Yeah, that don't matter. 'Cause I was nobody before.
Adrian: Don't say that.
Rocky: Ah come on, Adrian, it's true. I was nobody. But that don't matter either, you know? 'Cause I was thinkin', it really don't matter if I lose this fight. It really don't matter if this guy opens my head, either. 'Cause all I wanna do is go the distance. Nobody's ever gone the distance with Creed, and if I can go that distance, you see, and that bell rings and I'm still standin', I'm gonna know for the first time in my life, see, that I weren't just another bum from the neighborhood.
Rocky: ADRIAN!
Rocky II
Rocky Balboa: It's Apollo.
Mickey: Who were you expecting?
Rocky Balboa: I was hoping he wouldn't show
[to Apollo, about a rematch with Rocky]
Duke: He's all wrong for us, baby. I saw you beat that man like I never saw no man get beat before, and the man kept coming after you. Now we don't need no man like that in our lives.
[During Rocky's retraining]
Mickey: This guy just don't want to win you know. He wants to bury you, he wants to humiliate you, he wants to prove to the whole world that you was nothing but some kind of a... a freak the first time out.
[Rocky is punching the heavy bag]
Rocky Balboa: Three, four.
Mickey: Now remember I want 500 hard ones go!
Rocky Balboa: Where was I, seven or eight?
Rocky Balboa: [noticing Mickey's hearing aid] What's that in your ear there?
Mickey: What it is, is I hear stupid things better.
Mickey: [after slapping Rocky in the face with his left hand] Now you didn't even see that comin', did ya? And that's comin' from a broken down punk like me. What... what do ya think the champ would do to ya?
Rocky Balboa: Hurt me bad I guess...
Mickey: Na, he'd hurt ya permanent. *Permanent*!
Rocky III
Interviewer: Do you hate Rocky?
Clubber Lang: No, I don't hate Balboa. I pity the fool.
Interviewer: What's your prediction for the fight?
Clubber Lang: My prediction?
Interviewer: Yes, your prediction.
[Clubber looks into camera]
Clubber Lang: Pain!
Rocky Balboa: Tomorrow. Let's do it tomorrow.
Apollo Creed: [Screaming] There is no tomorrow! THERE IS NO TOMORROW! THERE IS NO TOMORROW!
Apollo Creed: Now, when we fought, you had that eye of the tiger, man; the edge! And now you gotta get it back, and the way to get it back is to go back to the beginning. You know what I mean?
Apollo Creed: See that look in their eyes, Rock? You gotta get that look back, Rock. Eye of the tiger, man.
Rocky Balboa: You ain't so bad, you ain't so bad, you ain't nothin'. C'mon, champ, hit me in the face!
Clubber Lang: I'm going to bust you up.
Rocky Balboa: Go for it.
Rocky Balboa: Nothing is real if you don't believe in who you are!
Rocky IV
Adrian: It's suicide. You've seen him, you know how strong he is. You can't win.
Rocky: Oh, Adrian. Adrian always tells the truth. No, maybe I can't win. Maybe the only thing I can do is just take everything he's got. But to beat me, he's going to have to kill me. And to kill me, he's gonna have to have the heart to stand in front of me. And to do that, he's got to be willing to die himself. I don't know if he's ready to do that. I don't know.
Apollo: We always have to be in the middle of the action 'cause we're the warriors. And without some challenge, without some damn war to fight then the warriors might as well be dead, Stallion. Now I'm asking you - as a friend - stand by my side this one last time.
Apollo: Without some damn war to fight, then the warrior may as well be dead, Stallion!
Nicoli Koloff (talking about Drago): Whatever he hits, he destroys.
Drago: You will lose.
Drago: If he dies, he dies.
Drago: I must break you.
Duke: [to Rocky] You see? You see? He's not a machine, he's a man, he's a man.
Drago: [to his own trainer] He's not human. He's like a piece of iron.
Rocky: Going in one more round when you don't think you can - that's what makes all the difference in your life. (the margin!)
Rocky V
Rocky Balboa: [Present day, remembering] Nature's smarter than people think...
Mickey: [Flashback] And nature is smarter than people think. Little by little we lose our friends, we lose everything. We keep losin' and losin' till we say you know, 'Oh what the hell am I livin' around here for? I got not reason to go on.' But with you kid, boy, I got a reason to go on. And I'm gonna stay alive and I will watch you make good..
Rocky VI
Duke: To beat this guy, you need speed. You don't have any. Your knees are weak so no hard running. You've got neck arthritis and calcium deposits in most of your joints, so sparring is out.
Paulie: [to Rocky] I had that problem.
Duke: So what we'll be callin' on, is good old-fashioned blunt force trauma. Horse power. Heavy duty cast iron pile drivin' punches that will have to hurt so much it'll rattle his ancestors. Everytime you hit him with a shot, it's got to feel like he tried kissing the express train.
Duke: [cracks his neck] Yeah! Let's start building some hurtin' bombs.
Martin: Theres always somebody out there. Always. And when that time comes and you find something standing if front of you, something that ain't running and ain't backin up and is hittin on you and your too damn tired to breathe. You find that situation on you, that good, Cuz thats baptizim under fire! Oh you get thru that and you find the only kind of respect that matters in this world, Self respect.
Rocky Balboa: It will beat you to your knees and keep you there permanently if you let it. You, me or nobody is going to hit as hard as life. But it ain't about how hard you hit, it is about how hard you can get hit and keep moving forward, how much can you take and keep moving forward. That's how winning is done!