Ava Gardner: You listened to my phone calls?
Howard Hughes: No! No! No! Honey I would never do that! I'd never do that! I... I just read the transcripts, that's all.
Howard Hughes: Do you know those men? Do they work for me?
Noah Dietrich: Everybody works for you, Howard.
Howard Hughes: What the hell does a senator from Maine need to fly to Peru for?
Noah Dietrich: Nice day.
Howard Hughes: Yeah, very funny.
Noah Dietrich: Listen, I got a call from Houston. They're getting real nervous about all this.
Howard Hughes: Stop showing them the damn bills, Noah.
Noah Dietrich: That would be illegal, Howard.
Howard Hughes: Shit, no. Maybe it's a little bit naughty.
Katharine Hepburn: Can't you just eat ice cream out of a bowl, like everyone else?
Howard Hughes: Come in with the milk. Come in with the milk. Come in with the milk.
Sen. Ralph Owen Brewster: ...we would like him to reappear. Would you ask him to return?
Howard Hughes: No, I don't think I will.
Sen. Ralph Owen Brewster: Will you try to have him return?
Howard Hughes: No, I don't think I'll try.
Sen. Ralph Owen Brewster: You don't think you'll try?
Howard Hughes: No, I don't think so.
Howard Hughes: Look at me, Kate. Stop acting.
Katharine Hepburn: Ha. I'm not acting.
Howard Hughes: I wonder if you even know any more.
Katharine Hepburn: Don't be unkind.
Howard Hughes: I care very much about aviation.
Ava Gardner: ...You can't buy me, Howard, so stop trying. Don't buy me any more diamonds or sapphires or any other damn thing. You can buy me dinner.
Katharine Hepburn: What's that on the steering wheel?
Howard Hughes: Cellophane. If you had any idea of the crap that people carry around on their hands.
Katharine Hepburn: What kind of crap?
Howard Hughes: You don't wanna know.
Spencer Tracy: Trouble with Mr. Hughes?
Katharine Hepburn: There's too much "Howard Hughes" in Howard Hughes. That's the trouble.
Howard Hughes: Does that look clean to you?
Ava Gardner: Nothing's clean, Howard. But we do our best, right?
Howard Hughes: Pull back on the wheel a bit.
Katharine Hepburn: Golly.
Howard Hughes: I don't think I've ever met anyone who uses the word Golly.
Juan Trippe: If you let him testify at that hearing, the whole world will see what he's become. They should remember him for what he was.
Howard Hughes: I want ten chocolate chip cookies. Medium chips. None too close to the outside.
Howard Hughes: You don't care about money because you've always had it.
Noah Dietrich: Get a doctor! No one sees him like this.
Howard Hughes: Will you marry me?
Ava Gardner: You're too crazy for me.
Howard Hughes: I feel like a little adventure.
Katharine Hepburn: Do your worst, Mr. Hughes.
Answer: The first sections of the film are shot in two-strip and three-strip technicolor, a common practice in the early versions of color filmmaking that were happening at the time. The scene on the golf course between Howard and Kate Hepburn is a prime example. As far as the later sections of the film, never underestimate the power of digital effects. :)