Your penicillin tea tastes like penicillin.

I've been gone and I'm sorry, sorry for what the city has had to endure in my absence. But you did endure it and the evidence of that struggle is lying at my feet. You did not fail this city and I promise I will not fail you by leaving it again.

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.

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.

Arrow: What do you think you're doing?
Black Canary: Your job, apparently!

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.

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!

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: You smell like smoke. Korean barbecue?
Oliver: C4. Yeah.

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.

Roy: You tagged Laurel with a tracer?
Oliver: If she's gonna be reckless, I need to know what she's doing.
Felicity: Well she's definitely doing something. I'm just not exactly sure how reckless it is.

Roy: You think you're the only person who can stand up for Thea?
Oliver: I'm trying to figure out why you're standing up to me!
Diggle: Alright. Maybe we just need to throttle back.
Felicity: No! We need this. Oliver, you were gone, dead, at least we thought you were, and we had to go on with our lives and doing that meant not doing things your way.
Oliver: Fine. I'm back now!
Felicity: That doesn't mean we can go back! And you do not have the right to come back here and question everyone's choices.

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