The Flash, Season 2

Cisco:
It's like right now I'm Anakin Skywalker. I got the midi-chlorians. I've got the goods. The force is strong with me. That is something I can feel. But if I start opening breaches into other worlds, doing all this other crazy stuff Reverb was doing, then... what if this how I become Vader?

Barry:
Dude, you're never going to become Vader.

Cisco:
That is what happened to Reverb. He learned how to use his abilities, and when he felt that... when he felt that power... he succumbed. To the dark side.

Barry:
Look, I get it. I really do. Every time I've learned a new ability, I've been terrified about what it might mean for me. What it could do to me, you know? But you were there with me when I learned how to run on water. When I ran up a building or travelled through time. Just like I'm gonna be there every step of the way with you. You got something that Reverb never had, and that's Caitlin and Joe and Iris and Wells and me. Friends. We're gonna look out for you. And we're more than just friends, we're your family.