Who said "The Iron Fist is only as strong as the man wielding it."?

This quote is attributed to Iron Fist.

The Iron Fist is only as strong as the man wielding it. - Iron Fist

"The Iron Fist is only as strong as the man wielding it."

Iron Fist Strength

"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."

"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."