Who said "The North mourns its own."?

This quote is attributed to Bran Stark.

The North mourns its own. - Bran Stark

"The North mourns its own."

Bran Stark

"The things we love destroy us every time."

"I am of the night."

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

"A reader lives a thousand lives before he dies."