Who said "I've survived because I'm willing to do what others won't."?

This quote is attributed to Natasha Romanoff.

I've survived because I'm willing to do what others won't. - Natasha Romanoff

"I've survived because I'm willing to do what others won't."

Natasha Romanoff Perseverance

"I'm not going to fight you."

"Sometimes the best way to solve your own problems is to help someone else."

"I have a very specific skill set."

"You know, I'm actually a very good liar."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."