Who said "Strength isn't just physical. It's also mental and moral."?

This quote is attributed to Agent Coulson.

Strength isn't just physical. It's also mental and moral. - Agent Coulson

"Strength isn't just physical. It's also mental and moral."

Agent Coulson Strength

"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?"

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."