Who said "A woman's valor is no less than a man's sword arm."?

This quote is attributed to Brienne of Tarth.

A woman's valor is no less than a man's sword arm. - Brienne of Tarth

"A woman's valor is no less than a man's sword arm."

Brienne of Tarth Strength

"I am no one's daughter now. I am Brienne of Tarth, and I will answer to no man but the Lord of Light."

"The things we love destroy us. Every time."

"I'm not a lady. I'm a warrior."

"Oaths are not words. They are things we do."

"Strength comes from within."

"A woman should be proud of who she is."

"A strong woman can overcome anything."

"The only thing I'm good at is killing."