We look at mountains and call them eternal, and they seem... but in the course of time, mountains rise and fall, rivers change their courses, starts fall from the sky, and great cities sink beneath the sea. Even gods die, we think. Everything changes.
George R. R. Martin (2012). “George R. R. Martin's A Game of Thrones 5-Book Boxed Set (Song of Ice and Fire Series): A Game of Thrones, A Clash of Kings, A Storm of Swords, A Feast for Crows, and and A Dance with Dragons”, p.1035, Bantam