In the best nonfiction, it seems to me, you're always made aware that you are being engaged with a supple mind at work. The story line or plot in nonfiction consists of the twists and turns of a thought process working itself out.
Phillip LopateThe essay is a wonderful medium. I might mention that some writers who longed to be novelists were better as essayists: Sontag, Baldwin, Vidal, Mary McCarthy, Mailer.
Phillip Lopate