Oliver: Felicity, wanna play a game?
Felicity: What game are we playing?
Oliver: We're playing the "reason you know so much about these ghosts is beause you've been helping the team behind my back" game.

Cities are like puppies. You see them writhing in the street, you put them down, you don't let them suffer.

Damien

We trade Damien for the virus. That is remarkably ruthless and cold blooded. I approve.

Malcolm

Felicity: Barry!
The Flash: Thank you, Felicity, you just outed my secret identity to a super villain. No offense.
Malcolm: None taken.

There is no greater birth than the one you are about to take on, the annihilation of one's home.

Ra's al Ghul

Felicity: I can't believe he's gonna marry her.
Malcolm: You should worry more about getting out of here alive.
Ray: Is that even a remote possibility?
Laurel: Oliver would never let that happen.
Diggle: He let this happen.

Felicity: Hey Oliver! What's going on?
Oliver: If any of you speak, we're all going to die.
Felicity: What?
Oliver: I need you to trust me.

Thea: Jason, I have a '67 Mustang that need a little work on it. Someone said you were the guy to see.
Roy: You came to the right place.

Oliver: Malcolm, we need help.
Malcom: By all accounts, you were too good at allying yourself with Ra's and I don't think I carry much credibility with them.

Diggle: There's only one thing left of him now.
Laurel: And what's that?
Diggle: Us.
Thea: Gone but not forgotten.

We thought that Oliver was just giving up his life to Ra's, but he gave up his soul.

Felicity

Laurel: If anything happens with Nyssa, let me handle it on my own.
Diggle: Laurel, we're talking about the League of Assassins.
Laurel: I know that. I just...Oliver. You were closer to him than any two people I have ever known. You shouldn't have to...
Diggle: Fight him? Kill him? It's not going to come to that. Look, I'm with Felicity. There is nothing that Ra's al Ghul can do that can turn Oliver against the people he loves.

Arrow Quotes

I thought you took that book off your father's dead body. How could he have been so chatty?

Diggle

She was my sister. I couldn't be angry because she was dead. I couldn't grieve because I was so angry, that's what happens when your sister dies while screwing your boyfriend.

Laurel