That a guy with a bow and arrow cannot save a guy who's had a building fall on top of him. What's going on with you is not about The Arrow.

Lance

Lance: Hm. Last year you were working with The Arrow. What a difference a few months makes.
Laurel: The Arrow?
Lance: Yeah, it seems more appropriate than The Hood.

You should be happy I haven't avoided attachment to you.

Oliver

Lance: I could never figure out how he chose his victims.
Oliver: I think you just did.

Oliver: He won't talk to anyone.
Lance: What makes you so sure?
Oliver: Because he has another shoulder.

Thea, I need you to understand what is going on here. Five hundred and three people are dead and there is a measure of guilt that is owed me. I am ready to accept my punishment.

Moira

Laurel: No, dad, it's not. Look, whatever guilt you're feeling - you're just using it to justify a vendetta.
Lance: Well maybe I'm not the only one.

Oliver: There's someone new in town. A woman. She's targeting men who target women.
Roy: I know, I've seen her.
Oliver: Find her, but don't engage. Leave that to me.

As if porcelain dolls weren't creepy all on their own.

Felicity

Oliver, what I would like to know is what you were doing at Laurel's office in the first place. She makes you public enemy number one and you figured this was a good time to chat?

Diggle

Oliver: I got wrapped up in my own suffering and I forgot that some other people might be suffering, too.
Diggle: You know, we're getting dangerously close to hug territory, so I'm gonna fall back.

Diggle: You know I was just about to make my move on her. I didn't need one of your trick arrows getting in the way.
Oliver: I couldn't risk it. Where would I be without my black driver.

Arrow Quotes

You know Oliver, somebody once told me that secrets have weight. The more you keep, the harder it is to keep moving.

Diggle

Ra's al Ghul: You tasted death and you wanted more, but the truth is everyone and everything must come to an end. Even for one such as me.
Oliver: Kill me, but spare John Diggle's life. Let him go. I will beg for it.
Ra's al Ghul: You have shown tremendous strength, fortitude, power. No, Mr. Queen. I don't want to kill you. I want you to take my place. I want you to become the next Ra's al Ghul.