The visible reminder of Invisible Light."
― T.S. Eliot
"The light shines in the darkness, and the darkness has not overcome it."
“And you, Ring-bearer,’ she said, turning to Frodo. ‘I come to you last who are not last in my thoughts. For you I have prepared this.’ She held up a small crystal phial: it glittered as she moved it, and rays of white light sprang from her hand. ‘In this phial,’ she said, ‘is caught the light of Eärendil’s star, set amid the waters of my fountain. It will shine still brighter when night is about you. May it be a light to you in dark places, when all other lights go out."
― J.R.R. Tolkien, The Two Towers