Who said "The Iron Fist glows because of focus, not anger."?

This quote is attributed to Iron Fist.

The Iron Fist glows because of focus, not anger. - Iron Fist

"The Iron Fist glows because of focus, not anger."

Iron Fist Peace

"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."

"Peace comes from a good conscience."

"Life is too short to hold grudges."

"A man's home is his sanctuary. It should be treated as such."

"The world is chaotic enough. At least your home should make sense."