" Faithless is he that says farewell when the road darkens,’ said Gimli. ‘Maybe,’ said Elrond, ‘but let him not vow to walk in the dark, who has not seen the nightfall.’ ‘Yet sworn word may strengthen quaking heart,’ said Gimli. ‘Or break it,’ said Elrond. "

― J.R.R. Tolkien , The Fellowship of the Ring (The Lord of the Rings, #1)