I found the poet's thoughts quite helpful and not as self-indulgent as other reviewers. I think Roethke also considered himself to be an artist at teaching as well as at writing. His was not a case of "those cannot do, teach". He established a style of relating and conveying materials to students with many years of success. Most importantly, no teacher can instruct how to be a good or great writer. Every instructor in the arts faces this dilemma.I found Roethke's thoughts to have much merit. They aren't obtrusive or intrusive just a catch as catch can if they have meaning for the reader.