The world comes into existence when you awake and goes out of existence when you sleep. You are the world!
During sleep you live in a world of dreams, and sometimes utter quiet. Of these two states, the dream world is most like waking life. The quiet state is most like the condition of total enlightenment - which is beyond the world altogether. Is not life itself, when recalled (as memories) like a dream? A dreamer sometimes realizes they are in a dream, and thereby breaks the power of the dream.