Who said "Fear is just another weapon if you know how to use it."?

This quote is attributed to Black Widow.

Fear is just another weapon if you know how to use it. - Black Widow

"Fear is just another weapon if you know how to use it."

Black Widow Power

"I'm not the only monster in the room."

"It's never too late to start over."

"We all have our secrets. The question is what we do with them."

"Family is complicated, but it's all we have."

"Power without control is just destruction."

"Power is not about control, it's about influence"

"The world doesn't need me to be the hero. It just needs me to be dangerous."

"The claws come out when I need them to."