“ ‘The star-glass?’ muttered Frodo, as one answering out of sleep, hardly comprehending. ‘Why yes! Why had I forgotten it? A light when all other lights go out! And now indeed light alone can help us.’ ”1 The interplay between light and dark is an ongoing part of our lives. In the literal sense, we live in a world where the regular appearance of both provides a measure of regulation to our activities. Figuratively though,