The educator tries to tell people how to think; the propagandist what to think. The educator strives to develop individual responsibility; the propagandist, mass effects. … The educator fails unless he achieves an open mind; the propagandist, unless he achieves a closed mind.

Everett Dean Martin (1880-1941) American educator, minister, writer, lecturer

“Our Invisible Masters,” Forum, vol. 81 (1929)