Your brother has a secret, Thea. Would you like to know what it is?

Slade

Oliver: How'd you get off the island?
Slade: That is your first question/
Oliver: Well, you've made it pretty clear that you're not going to tell me where my sister is so, yeah, that is my first question.

Oliver: They're calling you Deathstroke.
Slade: That's a bit flamboyant. I like it.

Well, I told a guy the truth and he got struck by lightening. To be fair, it probably won't happen again. Statistically.

Felicity

Why is it so hard for everyone to just tell the truth?

Thea

Laurel: No! You're not a killer.
Canary: You don't know who I am Laurel, not really.
Laurel: Then show me.

Laurel: Helena, you don't have to do this.
Helena: Yes, I do. Because once you let the darkness inside, it never comes out.

Oliver sure does like to dress up his girls.

Huntress

I don't understand! What is so special about me?

Laurel

Laurel: Are you one of the good guys?
Canary: No, but I'm friends with them.

Sara: What do you guys think?
Felicity: Oh I think if the Huntress shows up you should totally kick her ass.

Oliver: Roy, you're dangerous. I thought I was helping you control it.
Roy: You are. I can't look at a bowl of water without slapping it.

Arrow Quotes

Your penicillin tea tastes like penicillin.

Oliver

Laurel: Helena, you don't have to do this.
Helena: Yes, I do. Because once you let the darkness inside, it never comes out.