
As quoted in The Eclectic Magazine Vol. VII, (January - June 1868)
Variants:
The teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on cold iron.
As quoted in School Arts (1935) by Art Study and Teaching Periodicals, p. 91
A teacher who is attempting to teach without inspiring the pupil with a desire to learn is hammering on a cold iron.
As quoted in Making Minds Less Well Educated Than Our Own (2004) by Roger C. Schank, p. 151