Hill: Oz, that's the name on the street for the Oswald Maximum Security Penitentiary. Oz is retro, Oz is retribution. You wanna punish a man? Separate him from his family, separate him from himself, cage him up with his own kind.

Hill: Tits! That's what we call drugs. 60% of the violence in prison is due to tits! Either people not paying their dues or people trying to control the traffic. The traffic. (scoffs) Lately, here in Oz, the traffic has been bumper to bumper!

Hill: Yeah, who cares who lives or dies in prison? We read their names in the morning paper and they mean nothing to us! They're faceless! Truth is we don't want to put a face on them! We don't want to know who they really are because then it might hit too close to home. And home is what it's all about, right? Making a home no matter where you are, no matter who you are. At the end of the day, all of us need somewhere to rest. Somewhere to lay our bones. Even if it's in a land called Oz. Yeah, like Dorothy says when she wakes up in her own bed back at Aunt Em's: "There's no place like home. There's no fucking place like home!"
Season Two

Hill: You gotta love your body because it's all you got to hold on to. It's all you got! I'll make a deal with you: I'll love your body if you love mine!

Joey: He ate his mother.
Nino: Get the fuck out of here!
Joey: So I heard. He killed her, then he broiled her head. Smothered it in onions.
Dino: What, no garlic?

Keane: (Last Words) I wanna tell my family that I love them and I believe that this punishes them more than it does me. I am so sorry for the three murders I did and I wish that, by killing me today, you could bring them back. My time in this world has been far too short. Too short to get it all done right. So I am ready to move on. All praise to Allah. All praise.

Kenny: I ain't afraid of you.
McManus: (begins choking Kenny, yelling) You afraid of this?! Huh?! ARE YOU AFRAID OF DYING?!

Kenny: Yo Markstram, man. What if Keane didn't kill Martinez? What if they got the wrong guy?
Markstram: He did it, Kenny.
Kenny: Look, I know he did it! I'm just saying, what if he didn't?
Joey: All I'm saying, Nino, is you gotta wonder what the guy's doing; what the guy's thinking sitting on Death Row knowing he's gonna die!
Nino: The only difference between you and him, Joey, is he knows the exact date he'll die!
Schillinger: The state's gonna let Keane pick his method of execution. Me, I'd pick hanging.
Mack: What about lethal injection?
Schillinger: That's for pussies.
Groves: They say lethal injection causes no pain. How do they know? Did someone come back from the dead and say they didn't feel anything?

L'Italien: (Last Words) I am really not ready for this. Oh, man.

Markstrom: You not gonna kiss the bride? (Adebisi grabs Keane and tries to kiss him)

Mershah: (seeing Said is having a heart attack) It is the hand of God! It is the will of Allah!
Said: Call a doctor!
Mershah: You must go ahead and die.

Mrs Smith:(To Groves after He killed her son) You broke God's law:Love thy neighbour.I want to hate You but I can't.I feel pity,tears but no hate.I didn't realise that until now.You're My neighbour and I Love You.And I forgive You with all My heart

Nino: You like tits?
Markstram: Who doesn't?
Nino: My tits are firm and round. Maybe you could suck my tits?
Markstram: You know, I know a lot of brothers who would love to.

O'Reily: If you gotta go, you gotta go high.

O'Reily: We gotta make him think that we're enemies. Keep him off guard until we kill him.
Adebisi: We kill him, the mob kills us.
O'Reily: They won't know. Not if we put this in his food.
Adebisi: Glass?
O'Reily: We make it fine, he won't be able to taste it. Over time, the glass will cut his insides up.
Adebisi: He'll die slowly.
O'Reily: But painfully.
Adebisi: You're one sick mother fucker, O'Reily.
O'Reily: Coming from you, that's a compliment.