Cumulative Record. Chapter 12: The Science of Learning and the Art of Teaching. Quote 28

Marking a set of papers in arithmetic—“Yes, nine and six are fifteen; no, nine and seven are not eighteen”—is beneath the dignity of any intelligent individual. There is more important work to be done—in which the teacher’s relations to the pupil cannot be duplicated by a mechanical device. Instrumental help would merely improve these relations. (p. 190)