Oliver, you're the last person on earth to lecture someone about lying to the people they love.

I had to put him down.

We're on our own.

The only reason you're still breathing is because one of us is still human.

Glad to see you picking up your psycho boss' old habits.

Diggle: Damien Darhk is no one's savior. He's a liar and a monster.
Andy: The Romans said the same thing about Jesus.

Oliver is leaving tonight for a magical mystery tour and wants me to stay put.

I'm so angry, I can hardly breathe.

Diggle: We need to go.
Oliver: Where?
Diggle: Somehwhere where I'm going to try to trust you again.

Diggle: I would think you. of all people, would understand keeping secrets when it comes to the death of a sibling.
Laurel: I do. And because I do, I can tell you carrying a burden like that never ends in any way but bad.

Oliver: He left behind evidence.
Diggle: Fingerprints.
Laurel: How'd you get the owner to part with his windshield?
Oliver: I bought his truck. It's one of the benefits of your girlfriend inheriting a multi-billion dollar conglomerate. We have money now.

Oliver: I'm looking for a way in.
Diggle: I was furious to think that you trusted Malcolm Merlyn more than you trusted me, but then I realized that I'm not angry with you, I'm angry at myself for thinking you're someone that you clearly aren't.
Oliver: I don't know what that means.
Diggle: Oliver, after everything we've been through, man, I couldn't fathom why you didn't trust me. Then I realized you couldn't. It's not who you are. You don't trust. You don't love. You were able to fool Ra's and join the League because inside you are every bit as dark as they are.

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

Every warrior must learn the simple truth -- that pain is inevitable and suffering is optional.

Malcolm