Who said "I've learned more from failure than success."?

This quote is attributed to Iron Fist.

I've learned more from failure than success. - Iron Fist

"I've learned more from failure than success."

Iron Fist Perseverance

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

"I've trained my entire life for this moment."

"The chi flows through all living things."

"I need to protect the innocent."

"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."