Who said "The world is bigger than Westeros."?

This quote is attributed to Arya Stark.

The world is bigger than Westeros. - Arya Stark

"The world is bigger than Westeros."

Arya Stark Adventure

"A girl has no name."

"The north remembers."

"Not today."

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

"The greatest adventure is life itself."

"The adventure of life begins with a single step."

"Adventure finds you when you stop running."

"Fortune and glory, kid."