Spencer Tracy: Trouble with Mr. Hughes?
Katharine Hepburn: There's too much "Howard Hughes" in Howard Hughes. That's the trouble.
Howard Hughes: That's just what we do in my business.
Howard Hughes: You have called me a liar and a thief and a war profiteer.
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.
Howard Hughes: I care very much about aviation.
Noah Dietrich: Get a doctor! No one sees him like this.
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: You don't care about money because you've always had it.
Howard Hughes: Come in with the milk. Come in with the milk. Come in with the milk.
Howard Hughes: I want ten chocolate chip cookies. Medium chips. None too close to the outside.
Katharine Hepburn: Can't you just eat ice cream out of a bowl, like everyone else?
Howard Hughes: What the hell does a senator from Maine need to fly to Peru for?
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.
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.