Here’s a favorite from one of my own teachers, Richard Marius:
“All writers create. I am always annoyed to hear fiction and poetry called ‘creative’ writing as if writing that explains, describes, and narrates – nonfiction – should somehow be relegated to the basement of the writing enterprise to dwell with the pails and the pipes. To assume that only fiction and poetry are ‘creative’ is to imagine that fiction writers and poets are somehow superior to scholars, journalists, and others who report, explain, and describe. A good case may be made for the proposition that the most truly original and creative writers in our society today work in nonfiction – Tom Wolfe, Gloria Emerson, Roger Rosenblatt, Carl Schorske, Joan Didion, Joe McGinniss, John McPhee, Garry Wills, Robert Caro, David McCullough, Roger Angell, Barbara Tuchman, and a host of others.”
Source: Marius, A Writer’s Companion, first edition (New York: Knopf, 1985), 15.