Who said "The Faceless Men don't kill people without a reason."?

This quote is attributed to Arya Stark.

The Faceless Men don't kill people without a reason. - Arya Stark

"The Faceless Men don't kill people without a reason."

Arya Stark Truth

"A girl has no name."

"The north remembers."

"Not today."

"What do we say to the god of death? Not today."

"Lucy, you got some 'splainin' to do!"

"You must always be honest with the people you love."

"Truth always comes out in the end."

"Honesty is always the best policy."