You can always take my word at face value.

Boden

Mouch, my entire relationship with Connie is based on asking her for as little as possible.

Boden

Hermann: Wow, aren't you full of mysteries.
Clark: Yup.

Look, it’s going to take more than homophobia and too much eyeshadow to win my affections Rafferty.

Shay

51 saved my life, man.

Jeff

Chief, the only thing you did was stand up for the firefighters in your house. The same thing you’ve been doing since you put on the bugles. This isn’t over.

Casey

Isabella: Miss McLeod, on this table here is a piece of paper awaiting your signature. Since it has been brought to the senator’s attention you don’t have a mandate to close anymore firehouses we’d like for you to sign it.
McLeod: I don’t think you understand…
Isabella: I don’t think you understand this: you may be able to bully your way around the State Fire Marshall’s office, but you’re swimming in different waters now, Gail. You’re gonna sign that paper or you’re gonna have microphones stuck in your face asking why your salary is a big chunk of the money you saved the city.
McLeod: If you would just stop to think for a moment…
Isabella: If you don’t sign that I’ll nail you to a cross so hard you won’t get a government contract as a meter maid.

Ding-freakin’-dong the witch is dead!

Hermann

You see Mouch, when a man and a woman share a delightful hug…

Severide

My old roommate, I annoyed him so much he actually punched me in the face.

Mouch

Make no mistake, I’m going to shut down 51, and when I’m done doing that I’m gonna bury you.

Gail

I’ve been thinking about it, and, the truth is, I don’t know where I’d be without you.

Casey