Annie Dillard said this quote

Putting a book together is interesting and exhilarating. It is sufficiently difficult and complex and it engages all your intelligence. It is life at its most free. Your freedom as a writer is not freedom of expression in the sense of wild blurting; you may not let it rip. It is life at its most free, if you are fortunate enough to be able to try it, because you select your materials, invent your task, and pace yourself.