George Mason: You have no idea what you're getting yourself into.
Jack: Why don't you explain it to me. You've got five seconds.

George Mason [Regarding Jack's plan to sacrifice himself to safely detonate the nuclear device]: Come on, Jack, you've had a death wish ever since Teri died. The way things have been going for you the past year and a half, this probably doesn't look like such a bad idea. You get to go out in a blaze of glory, one of the greatest heroes of all time, leave your troubles behind. You still have a life, Jack. You wanna be a real hero, here's what you do: you get back down there and you put the pieces together. You find a way to forgive yourself for what happened to your wife. You make things right with your daughter and you go on serving your country. That'd take some real guts.

Amador: You betrayed me, Jack. You were with CTU all along.
Jack: That's right, Amador. You betrayed me, too. I'm just better at it than you.

Chloe: You were right about Curtis and Assad. Curtis was in the army, just after desert storm. His squad was ambushed by Assad's people. They killed 5 of Curtis's men and took 2 more hostage. Curtis was badly wounded, he couldn't go after them. The next day a tape was sent to the local television station. Assad's lieutenant forced the men from Curtis's patrol to beg for their lives, and then he personally beheaded them both.
Jack: Oh my God.

David Palmer: If there is something you're not telling me, something that could help us find this bomb, as President of the United States, I'm ordering you--No, no. As someone you claim you love, I'm asking you--Help me, Sherry.

Audrey: Look. We were fighting for our lives a few minutes ago, and if it hadn't been for Tony, we would've been dead. Now I've been through a lot today, and I'm sure, when this is all over, your boss will understand.
Jen Slater: And if he doesn't?
Audrey: [deadpan] I can have him killed.
[They both grin.]
Jen Slater: Knock yourself out.

George Mason Service is bad enough on this plane, you don't have to shoot me.
Jack What are you doing on this plane?
George Mason Felt like taking a ride.

George Mason: Hey! Almeida. I'm on your side. Nina oughta be here right now, what does Jack need her for? You're busting your ass without any resources because she felt like taking a ride with him. If that works for you, great��
Tony: You know what works for me? You keeping out of my personal business, that works for me!

Dan: (Referring to Janet York) Well, err, maybe she wasn't quite dead.
Ira Gaines: Well, let me tell you Dan; You're either dead, or you're not dead. There's no such thing as 'sort of dead'. Here, let me show you. (Shoots Dan in the chest)
Ira Gaines: (To Rick) You've just been promoted, congratulations.

David Palmer: All right, "On this historic occasion..."
Patty Brooks: Well, it is a historic occasion, sir.

Charles Logan: Damn you Martie, putting me in such position.

Curtis: I can't let this animal live!

David Palmer: [On Nina Myers] Let her share the fate of everyone she's endangered.

Henry Powell: Who are you guys? Police? FBI?
Tony: Actually, I'm currently unemployed.

Buchanan: [to Jack] We're asking you to sacrifice yourself.