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

This quote is attributed to Agent Coulson.

I've learned more from failure than from success. - Agent Coulson

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

Agent Coulson Perseverance

"I'm sorry, the god of Thunder lost his hammer and apparently nobody saw that coming."

"There's no such thing as coincidence. Only the inevitable."

"I've always admired your confidence. Not always your judgment, but your confidence."

"Big man in a suit of armour. Take that off, what are you?"

"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."