“I believe that the motion picture is destined to revolutionize our educational system and that, in a few years, it will supplant, largely, if not entirely, the use of textbooks. I should say that on the average we get only about two percent efficiency out of textbooks as they are written today.”

10 years later

“The education of the future, as I see it, will be conducted through the medium of the motion picture, a visualized education, where it should be possible to obtain one hundred percent efficiency.”

3 years later

“In ten years, textbooks as the principal medium of teaching will be as obsolete as the horse and carriage are now....There is no limitation to the camera.”

Thomas Edison, 1924, '34, and '37 (as quoted by Todd Oppenheimer in "The Flickering Mind")