This isn't the first time I've heard that Oliver is dead. He's been back before. He'll be back again.

Laurel

Felicity: I was out of line and I'm sorry.
Ray: Do you want to tell me what had you so upset?
Felicity: I lost a friend of mine. He was more than a friend, actually. I'm not sure what we were, but he's gone.
Ray: I'm sorry.
Felicity: And three months ago another friend of mine died. I'm 25 years old. I'm over my quota where losing friends are concerned. And you're a friend. So if you want to go out there, if you want to commit suicide, I can't stop you, but I don't have to help you.

Diggle: I'm more of a glock kind of a guy.
Roy: I didn't say anything.

Felicity: I know you think you're going to be safe inside that suit of armor, I know there's like a kajillion movies that make it look easy, but...
Ray: The Arrow and his partner go out there every night. Without armor.
Felicity: And one night, hopefully very off in the future, they're not going to come back. I don't want that to happen to you.

Diggle: OK. The point is, if we're going to do this without Oliver, Felicity, we have to trust each other.
Felicity: You don't get it. There is no 'this' without him. It's done. I'm done.

Diggle: He's not coming back, Oliver. I know you don't want to believe it, Laurel, God knows I don't but, he's not coming back.
Laurel: Are you? Are you coming back?
Diggle: I don't know. For the first time since I met Oliver Queen I don't know what happens next. I know it's silly, but I still like to think of myself as Oliver's bodyguard. I just couldn't protect him. It's funny. He was worried something would happen to me.

Roy: What the hell do you think you're doing out there?
Laurel: Same thing as you.
Roy: I've had training from Oliver and years on the streets. You have a law degree.

Your penicillin tea tastes like penicillin.

Oliver

Roy: You are poison. You put her in Ra's al Ghul's gun sites. You had her kill Sara.
Malcolm: Thea knows nothing about Sara and she never will.
Roy: That's where you're wrong. I know her. She'll get to the truth no matter how good you think you're hiding it and when she does find out you've been lying to her, you're gonna lose her forever. Trust me, I know it from experience.
Malcolm: This is a family matter, Mr. Harper, and you are not family.

Laurel: So you don't have to worry. I'm not going to be putting on that mask again. I'm not strong enough to fight for Sara.
Felicity: Maybe you're not supposed to. Maybe it's not about Sara, or Oliver or anyone else that we care about who we lost. Maybe what we're doing, we've been doing because there are people that we care about that are still alive. Maybe we're doing it for them.
Laurel: I thought you quit.

Lance: We need help, we need it now. Look, I know you said the Arrow is gone, are you sure about that?
Felicity: Yes, I am. But I think I know where to find the Canary.

Roy: We can't do this without Oliver, can we? Felicity was right.
Felicity: Actually, I was wrong, and I'm not wrong a lot.

Arrow Quotes

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 Queen is dead, eventually to be reborn as Ra's al Ghul. For now, only the Arrow, Al Sah-him, shall remain. Al Sah-him, Heir to the Demon.

Ra's al Ghul