Who said "True strength comes from knowing when not to fight."?

This quote is attributed to Iron Fist.

True strength comes from knowing when not to fight. - Iron Fist

"True strength comes from knowing when not to fight."

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."