Who said "I have learned that trust is the greatest weapon."?

This quote is attributed to Brienne.

I have learned that trust is the greatest weapon. - Brienne

"I have learned that trust is the greatest weapon."

Brienne Relationships

"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."

"The key to a happy marriage is communication."

"Marriage is about compromise and understanding."

"Life's greatest treasures are relationships."

"Trust is a luxury I can't afford."