From Sam Weller’s interview of Ray Bradbury in “The Art of Fiction No. 203” (The Paris Review: Spring 2010, No. 192):
I write all the time. I get up every morning not knowing what I’m going to do. I usually have a perception around dawn when I wake up. I have what I call the theater of morning inside my head, all these voices talking to me. When they come up with a good metaphor, then I jump out of bed and trap them before they’re gone. That’s the whole secret: to do things that excite you. Also, I always have taken naps. That way, I have two mornings!