Wanda Maximoff: Is that why you've come, to end the Avengers? Ultron: I've come to save the world! But, also... yeah.
[about Thor's hammer, Mjölnir] Clint Barton: [drunk] "Whosoever, be he worthy, shall have the power", whatever man! It's a trick! Thor: It is more than that, my friend!
Thor: [sees Thor laugh] You think this is funny? This could have been avoided if you hadn't played with something you don't understand... Tony Stark: I'm sorry... I think it's funny, I think it's a hoot that YOU don't get why we need this! Bruce Bann...
[Captain America has lost his shield in a fight with Ultron] Natasha Romanoff: Am I always picking after you boys? [grabs the shield off the street while racing on motorcycle, to get it back to Cap]
[the Hulk is on a rampage] Tony Stark: [in the Hulkbuster] Listen to me, that little witch is messing with your mind. You're stronger than her, you're smarter than her. You're Bruce Banner! [the Hulk roars and throws a car at Stark] Tony Stark: Right...
Tony Stark: [trying to fix a John Deere tractor] Hello, dear. I wonder what I can do for you? Nick Fury: Here's a hint: don't bring it to life.
Bruce Banner: Would you like to come to the party? Dr. Helen Cho: My appointments are too hectic, unfortunately. [pause] Dr. Helen Cho: Is Thor going to be there?
[from trailer] Nick Fury: Here we all are, with nothing but our wit and our will to save the world! So stand and fight!
[From trailer] Ultron: I was designed to save the world. People would look to the sky and see hope... I'll take that from them first.
Nick Fury: Outwit the platinum bastard. Natasha Romanoff: Steve doesn't like that kind of talk. Steve Rogers: You know what Romanoff...
Laura: I see you with the Avengers, and, well... Clint Barton: You don't think they need me? Laura: Actually, I think they do. They're gods, and they need someone to keep them down to Earth.
The Vision: I don't want to kill Ultron. He's unique... and he's in pain. But that pain will roll over the Earth. So he must be destroyed: every form he's built, every trace of his presence on the 'net. We have to act now, and not one of us can do it...
Natasha Romanoff: And how's little Natasha? Laura: [holding her stomach] Actually, it's Nathaniel. Natasha Romanoff: [to womb] Traitor.
Natasha Romanoff: [on Mjölnir] That's not a question I need answered.
Tony Stark: [the Avengers take turns to lift Thor's hammer] Clint, you've had a tough week. We won't hold it against ya if you can't get it up.
Steve Rogers: We can still find a better way to achieve peace? Ultron: I can't actually throw up in my mouth, but if I could I would do it!
[from trailer] Tony Stark: It's the end, the end of the path I started us on. Natasha Romanoff: Nothing lasts forever.
Ultron: [Loud ringing noise fades into Ultron's voice] ... worthy... No... How could you be worthy? Your all killers. Steve Rogers: Stark. Tony Stark: JARVIS. Ultron: Sorry I was asleep... Or... I was a dream... Tony Stark: [Tapping his phone] Reboot...