"Part of my function as a writer is to dream awake. And that usually happens. If I sit down to write in the morning, in the beginning of that writing session and the ending of that session, I'm aware that I'm writing. I'm aware of my surroundings. It's like shallow sleep on both ends, when you go to bed and when you wake up. But in the middle, the world is gone and I'm able to see better."

Source: Stephen King (2001). “On writing: a memoir of the craft”