The Flash, Season 4

Ralph:
Axel created some kind of acid that, we're guessing,... can probably kill me. I'm not ready to die.

Barry:
Look, this job has a way of making you feel invincible. But every once in a while, a little mortality check shows up.

Ralph:
I've been trying so hard to ignore this feeling, but... I'm not fearless like you are.

Barry:
Ralph, I'm not fearless. I wake up every day in this cell and feel like there's nothing I can do to help anyone. I mean, that terrifies me. I used to be somebody who saved, and now I'm just Barry Allen, Inmate #3562.

Ralph:
So let me spring you.

Barry:
That's not my point. Having the ability to help someone, but do nothing -- that is a far worse death than anything the Trickster has for you. But rising above that fear and saving those lives, that's a greater life. So rise up. I don't think it's a stretch for you.

Ralph:
You really believe I can do that?

Barry:
Yes. You just need to believe it yourself.