Who said "I want to serve"?

This quote is attributed to Brienne of Tarth.

I want to serve - Brienne of Tarth

"I want to serve"

Brienne of Tarth

Character in A Clash of Kings

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"A woman's place is wherever she chooses to be"

"A true knight protects the innocent."

"A loyal man is worth ten mercenaries."

"A man is never as weak as when he is in love."