I think you didn't have a problem with Felicity’s performance until she met Barry Allen.

Diggle

Roy: You’re the only thing keeping me together. How did I get to be so lucky?
Thea: You stole my purse.

Laurel, if there’s something on your mind, give it voice. I don’t bite. I promise.

Sebastian

Sara: Ivo killed Shado. He’s the one that pulled the trigger.
Oliver: Because I chose to save you. He needs to know the truth

Diggle: I've just never seen you spooked like this before.
Oliver: That should tell you something.

Not to tell you how to do your vigilante-ing but the grease paint thing is a poor identity concealer.

Barry

Sebastian Blood: You know who he is under that hood, don't you?
Slade: I know exactly who he is. He's my friend.

I will arrange for you receive another sample of my blood, and then you can begin to mass produce the serum again.When I ask you not to confront the vigilante, you will listen. Remember, your mask can be worn by another.

Slade

I know I called you a murderer, but you are not. You are a hero. You beat the island. You beat my father. So fight, Oliver. Get up and fight back.

Tommy

The island didn't make you strong, kid. It revealed you to be weak.

Slade

Oliver: You're dead.
Slade: You're not a hero. Or a friend. Or a brother. You're nothing.

Oliver Queen. He is a billionare by day and saves the city by night.

Barry

Arrow Quotes

There are people in this world who deal only in extremes. It's naive to think that anything less than extreme measures will stop them.

Amanda

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