Who said "In battle, there is no time for doubt. There is only action."?

This quote is attributed to Brienne.

In battle, there is no time for doubt. There is only action. - Brienne

"In battle, there is no time for doubt. There is only action."

Brienne Courage

"I am no one's daughter now. I will kill the men on my list."

"Nothing's worth nothing."

"I'm not a lady, I never have been."

"Renly was a good man. I would have died for him."

"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."