Who said "I've learned that vulnerability is not weakness."?

This quote is attributed to Danny Rand.

I've learned that vulnerability is not weakness. - Danny Rand

"I've learned that vulnerability is not weakness."

Danny Rand Courage

"I am the living weapon. I am Iron Fist."

"My training has taught me that discipline is the foundation of everything."

"I've learned that wealth means nothing without purpose."

"The pain I endured made me stronger than I ever imagined."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."