““Millions of those who are watching...can read hardly at all. Millions more can read the words but cannot understand them. Of those who can both read and understand, a good three-quarters we may assume have some part of half an hour a day to spare for the subject. To them the words so acquired are the cue for a whole train of ideas which we allow the words we read to evoke form the biggest part of the original data of our opinions. The world is vast, the situations that concern us are intricate, the messages are few, the biggest part of opinion must be constructed in the imagination.””
