Decades of writers' interviews with the Paris Review. I've read a couple of them (Bradbury, Parker, Steinbeck) and they are all so brilliant.
ETA (quote):
VONNEGUT
There is no shortage of wonderful writers. What we lack is a dependable mass of readers.
INTERVIEWER
So-?
VONNEGUT
I propose that every person out of work be required to submit a book report before he or she gets his or her welfare check.
Edit 2: Margaret Atwood quote
All children “write.” (And paint, and sing.) I suppose the real question is why do so many people give it up. Intimidation, I suppose. Fear of not being good. Lack of time.