Diggle: Oliver, if this were anybody else you'd be hooded up right now on your way to have an Arrow side chat with them.
Oliver: This isn't anybody else. This is my mother, and I know her.

The experience of helping others it its own reward.

Laurel

I've been researching some of those people online and....they're not good people.

Oliver

I think this list might have cost Walter his life.

Felicity

Felicity: If it's an energy drink, why is it in a syringe?
Oliver: I ran out of sports bottles.

Vertigo is measured in lives. Fifty six people died to perfect this high. Believe me when I say that they did not die for nothing.

The Count

Diggle: Woah. That's a neat trick. You gonna teach me that someday?
Oliver: No.

Diggle: Find what you're looking for?
Oliver: Took down three Vertigo pushers tonight, Diggle. Last one finally knew a name. The Count.
Diggle: The Count. That's worse than The Hood.

Whoever you fear, fear me more!

Laurel: This clinic was his mothers.
Malcolm: Yes. And his mother taught him something that I've been trying to - that the world is a harsh and unforgiving place.
Laurel: And when did she teach him that?
Malcolm: When she was lying dead in the street with a bullet in her head. Good night.

Apparently he wants to mend some fences, but thanks to him I can't afford a fence, so I can only assume he has some other agenda.

Tommy

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

Diggle

Arrow Season 1 Quotes

Thea: I missed you so much.
Oliver: You were with me the whole time.

To live I had to make myself more than what I was, to forge myself into a weapon. I am returning not the boy who was shipwrecked, but the man who will bring justice to those who have poisoned my city. My name is Oliver Queen.

Oliver