Who said "I don't do optimism, but I do believe in possibility."?

This quote is attributed to Natasha Romanoff.

I don't do optimism, but I do believe in possibility. - Natasha Romanoff

"I don't do optimism, but I do believe in possibility."

Natasha Romanoff Hope

"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."

"Every day is a new opportunity."

"Hope is what gets us through difficult times."

"I'm not your enemy, kid. I'm trying to save you."

"Redemption is a long road."