Tony Stark: Well, it's time for me to tap out. Maybe I should take a page out of Barton's book. Build Pepper a farm, hope nobody blows it up.
Steve Rogers: The simple life.
Tony Stark: You'll get there one day.
Steve Rogers: I don't know. Family, stability... The guy who wanted all that went in the ice 75 years ago. I think someone else came out.
Nick Fury (about Hulk): Probably jumped out and swam to Fiji. He'll send a postcard.
Natasha Romanoff: "Wish you were here." You sent me to recruit him way back when. Did you know then what was gonna happen?
Nick Fury: You never know. You hope for the best, then make do with what you get. I got a great team.
Natasha Romanoff: Nothing lasts forever.
Nick Fury: Trouble, Ms. Romanoff. No matter who wins or loses, trouble still comes around.
Vision: You're afraid.
Ultron: Of you?
Vision: Of death. You're the last one.
Ultron: You were supposed to be the last. Stark asked for a savior and settled for a slave.
Vision: I suppose we are both disappointments.
Ultron: I suppose we are.
Vision: Humans are odd. They think order and chaos are somehow opposites and... try to control what won't be. But there is grace in their failings. I think you missed that.
Ultron: They're doomed.
Vision: Yes. But a thing isn't beautiful because it lasts. It's a privilege to be among them.
Ultron: You're unbearably naive.
Vision: Well... I was born yesterday.
Tony Stark: Romanoff. You and Banner better not be playing "hide the zucchini."
Natasha Romanoff: Relax, shellhead. Not all of us can fly. What's the drill?
Tony Stark: This is the drill. If Ultron gets a hand on the core, we lose.
Thor: Is that the best you can do?
(Ultron calls in his androids)
Steve Rogers: You had to ask.
Ultron: This is the best I can do. This is exactly what I wanted. All of you against all of me. How can you possibly hope to stop me?
Tony Stark: Well, like the old man said... (looks at Steve) together.
Ultron: You think you're saving anyone? I turn that key and drop this rock a little early and it's still billions dead. Even you can't stop that.
Thor: I am Thor, son of Odin, and as long as there is life in my breast... I am running out of things to say! Are you ready?
(Vision hits Ultron with Thor's hammer)
Vision: It's terribly well-balanced.
Thor: Well, if there's too much weight, you lose power on the swing, so...
Pietro Maximoff: This is S.H.I.E.L.D.?
Steve Rogers: This is what S.H.I.E.L.D. is supposed to be.
Pietro Maximoff: This is not so bad.
Nick Fury: Nice, right? Pulled her out of mothballs with a couple of old friends. She's dusty, but she'll do.
Steve Rogers: Fury, you son of a bitch.
Nick Fury: You kiss your mother with that mouth?
Natasha Romanoff: Cap, these people are going nowhere. If Stark finds a way to blow this rock...
Steve Rogers: Not till everyone's safe.
Natasha Romanoff: Everyone up here versus everyone down there? There's no math there.
Steve Rogers: I'm not leaving this rock with one civilian on it.
Natasha Romanoff: I didn't say we should leave. There's worse ways to go. Where else am I gonna get a view like this?
Clint Barton: All right, we're all clear here.
Steve Rogers: We are not clear! We are very not clear!