Who said "Winter is coming, and we must be ready."?

This quote is attributed to Sansa Stark.

Winter is coming, and we must be ready. - Sansa Stark

"Winter is coming, and we must be ready."

Sansa Stark

"I am of House Stark. The North remembers."

"A lady should be gentle and kind, but that does not mean she should be weak."

"I want to go home. Is that so terrible?"

"The world is not kind to girls who are clever."