This quote is written / told by Fred W. Friendly between October 30, 1915 and March 3, 1998. He/she was a famous Producer from USA.
The author also have 4 other quotes.
"Learning and teaching should not stand on opposite banks and just watch the river flow by; instead, they should embark together on a journey down the water. Through an active, reciprocal exchange, teaching can strengthen learning how to learn"
"Teaching is the only major occupation of man for which we have not yet developed tools that make an average person capable of competence and performance. In teaching we rely on the "naturals," the ones who somehow know how to teach"