Oliver: I'm always gonna hate Malcolm Merlyn, but right now he is a necessary evil.
Thea: We can take care of ourselves.
Oliver: Not against Ra's al Ghul. You have to trust me on this.
Thea: I do. But not him. I can't. I won't.
Thea: You smell like smoke. Korean barbecue?
Oliver: C4. Yeah.
Laurel: I know what you're gonna say, but I risked my life for this city while you were away, so that should earn me some respect.
Oliver: This isn't about respect and it's not about you risking your life. I understand that you miss Sara and I understand that when you go out there like this all of that pain goes away.
Laurel: It's the only time it ever does.
Oliver: That relief is not real. It's a drug.
Laurel: If you're implying...
Oliver: You're an addict and just like with booze and pills, that high that you're chasing every night is endangering your life.
Laurel: Go to hell, Oliver. You don't get to play that card with me. Ever! And if there is anyone who is anyone who is hiding the pain of real feelings and real life, it's you!
Thea: Tell me. Why now?
Oliver: Because Ra's al Ghul is coming for us. All of us. And the only chance that we have to survive is to work together. To trust each other.
Malcolm: He's right.
Thea: No. No, no he's not. I turned my back on everyone I know, including my own brother because you told me there was no one else I could trust.
Malcolm: I was only trying to protect you.
Thea: By driving a wedge between me and Ollie? You manipulated me!
Thea: Do you know how many times I've wished that I could thank The Arrow for the things he has done for this city?
Oliver: Probably as many times as I've wished we could have this conversation.
All those times I got mad at you for being a flake, or telling me something I knew that had to be a lie, you were saving someone's life. Thank you.Thea
Arrow: What do you think you're doing?
Black Canary: Your job, apparently!
Black Canary: Sara, Sara, please. I'm your sister.
Canary: Then why are you trying to take my place?!
Dinah Laurel Lance. Selfish Bitch. You're not a hero. You're a liar, a fraud and an addict.Canary
Before you left, the last thing you said to me was that you loved me. Now you're back and the first thing you tell me is that you're working with the man who turned your sister, a woman you're supposed to love, into a killer who killed a woman you used to love! I don't want to be a woman that you love.Felicity
Felicity: Merlyn is a monster. You're in this situation, Thea is in this situation because of him.
Oliver: Felicity, it's...
Felicity: No, just a few hours ago I stood right here and I swore that there was no way that you would ever agree to work with Malcolm Merlyn. Not ever! I guess I was wrong about everything. I need some air. I'm glad you're not dead.
Malcolm: Oliver, I know I wasn't there for Tommy, but I see Thea as my chance for redemption.
Oliver: You turned my sister into a killer and then you put her into the cross hairs of one of the most dangerous men on the planet.
Malcolm: And you won't believe me, but I did so with a heavy heart and expecting a different outcome.
Oliver: Ra's is going to come for me and he will learn the truth about Sara, eventually.
Malcolm: And then he will come for Thea. And me.
Oliver: That's why I have to kill him.
Malcolm: You couldn't before.
Oliver: This time I will have you to train me.
Malcolm: Only the student will have hope of defeating the master.