Who said "The greatest weapon is not steel, but the will to use it."?

This quote is attributed to Zemo.

The greatest weapon is not steel, but the will to use it. - Zemo

"The greatest weapon is not steel, but the will to use it."

Zemo Leadership

"The world has always belonged to the powerful. We just had to remind everyone."

"Bucky Barnes was a weapon. Now he is free. That is what matters."

"You cannot build a new world without breaking the old one."

"Empathy is a tool, nothing more. Use it wisely."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"