Thea is dead. And yes, Tommy's alive. But, he's trying another undertaking with Rene and...
Oliver: John I appreciate the assist but I still have to do this on my own.
Diggle: Right, because you think you have to die, right?
Oliver: No, I know I'm going to die.
Diggle: And I know that I don't have to accept that.
Oliver: If I let you help me, you will get hurt or you will get killed and it will be because of me.
Diggle: You don't know that!
Oliver: I do know that! Because everyone else in my life is either dead or alone! Look at the Earth that we are on. I've been gone twelve years. My mother is alive. Tommy's alive. Laurel's alive.
Diggle: Thea is dead. And yes, Tommy's alive. But, he's trying another undertaking with Rene and Dinah helping who, if you haven't noticed, are very bad people here. Oliver this world isn't better. It's much, much worse. You know why? Because you weren't in it.