Who said "The battle for the North is not over."?

This quote is attributed to Jon Snow.

The battle for the North is not over. - Jon Snow

"The battle for the North is not over."

Jon Snow Perseverance

"The things we love destroy us every time."

"I am of the night."

"The North Remembers."

"When the snows fall and the cold winds blow, the lone wolf dies, but the pack survives."

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."