Who said "You never know what you're capable of until you're tested."?

This quote is attributed to Vulture.

You never know what you're capable of until you're tested. - Vulture

"You never know what you're capable of until you're tested."

Vulture Perseverance

"You know, I'm something of a scientist myself."

"I'm not a bad guy. I'm just a man trying to provide for his family."

"The world has changed. We all have to change with it."

"Hard work and dedication—that's what builds character."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."