People say, 'I'm going to sleep now,' as if it were nothing. But it's really a bizarre activity. 'For the next several hours, while the sun is gone, I'm going to become unconscious, temporarily losing command over everything I know and understand. When the sun returns, I will resume my life.
George Carlin (2007). “The Best of Brain Droppings”, p.33, Peter Pauper Press, Inc.