A James Dickey quote many a writer will relate to, picked up by Scott Myers on his blog "Go Into The Story":
"Any time I get a little money that I can spend on myself,
I buy another typewriter and put it in another room and
start another project. It could be a novel, it could be
a poem I'm working on, it could be a translation,
it could be an essay, a literary criticism, it could be
a children's book, it could be a film script and it could be
whatever it is I'm interested in doing at the time.
And in a strange way the different projects kind of
cross-pollinate one another. It's very odd. Almost a
mystical process. You see something in one typewriter
that would be better off in another typewriter."
– James Dickey