Catherine Rollins: Steve, I'm going with you.
Steve McGarrett: Absolutely not.
Catherine Rollins: Well, I'm not asking for your permission.
Steve McGarrett: It doesn't matter, you're not going anywhere.
Catherine Rollins: Hey, look, let's forgo the whole John Wayne, "it's too dangerous for a little lady" speech, okay? You're gonna need support, I've done three tours of Kabul, and I'm just as qualified as you are when it comes to taking care of myself.
Steve McGarrett: Yes, you are.
Catherine Rollins: Good. Then you also know I'm not very good at taking "no" for an answer.

Catherine Rollins: Now that we've got that taken care of, how do you plan on doing this? Because all I've got is a pack of gum, some Dramamine, and a wry smile.
Steve McGarrett: I'm working on it.

What's the world coming to when your first love survives missiles, gunfire, rocket-propelled grenades, and gets taken out by a bunch of funky birds?

Frank Bama

Savannah Walker: If you weren't a cop, what would you be?
Chin Ho Kelly: Jazz trumpet.
Savannah Walker: Really? Like Miles Davis?
Chin Ho Kelly: Well, there's only one Miles Davis. Maybe that's why I became a cop.

Chin Ho Kelly: Better call your insurance agent from the car.
Kono Kalakaua: Tell him you want full coverage.
Savannah Walker: You're kidding, right? They're kidding, right?

Savannah Walker: How on earth did you get so tech-savvy?
Kono Kalakaua: Xbox.

Chin Ho Kelly: That was Wo Fat. Wo Fat is a ruthless son of a bitch. W-can I say that on TV?
Savannah Walker: You already did.

Savannah Walker: Hold on--for your information, I have a journalism degree from Northwestern.
Steve McGarrett: Your professors must be very proud.
Savannah Walker (to camera-man): Let's erase that.

Savannah Walker: Commander McGarrett, is he gonna make it?
Steve McGarrett: I don't care.

Sinead O'Connor called, she wants her hairstyle back.

Danny Williams

Ray Beckett: I want to see a warrant.
Danny Williams: Shut up.

McGarrett: Tell me you know how to swim.
Danny: I know how to swim. I swim for survival, not for fun.

Hawaii Five-0 Quotes

I just wanted to tell you I'm so sorry, so sorry.

Danny [to Marie]

Dealer: Game's closed unless you have an invitation.
Grover [holding up his badge]: Here's my invitation. It's even engraved.