The Flash, Season 3

Iris:
What was he (Savitar) like?

Barry:
Broken.

Iris:
You know, all this time, I thought that Savitar is this... monster. It's hard to picture what might happen and... it being you, it... I know it's not you, I'm... [trails off]

Barry:
Part of him is. He said it was like looking in a mirror, and he was right. But not just the way that he looked. It was... it was his eyes. The pain that was inside them. I've seen that in myself. When I think about how my parents died so violently. Sometimes I want to repay that violence with more violence. I wanna make someone else hurt as much as I do.

Iris:
But you don't ever do that. You're not him, you're a good person.

Barry:
I know, but it's in there, you know. That's in me. That power, that pain. That's where Savitar comes from. From loss. From losing you.

Iris:
You're not going to lose me. Do you hear me? And we are going to stop Savitar. You are not alone. He is. And he is not a god.

Barry:
Jay told me that we're not gods. He was wrong. We could be. Any speedster, and it wouldn't take much. When the love in our hearts is drowned in anger, when the bad memories outweigh the good ones. [softly] What am I going to have to become to stop him?