?

All our evenings we have been looking at the death of candles:
we use and are used up. What is the using for?
Light, light . . . how, why, should there be light? And what is it? What is it for?
It travels a hundred and eighty-six thousand miles a second, exists only as it travels.
Could it exist if it had nowhere to travel to? Could we? Do we?

--Peyton Houston XVI Complex Songs at the Borders of Silence