Who said "Fear is a tool. But it shouldn't be a master."?

This quote is attributed to Black Widow.

Fear is a tool. But it shouldn't be a master. - Black Widow

"Fear is a tool. But it shouldn't be a master."

Black Widow Courage

"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."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."