"As a former pulp writer himself, Maxwell knew he had to make sure that the writers wove liberal doses of good old-fashioned “blood and thunder” into each story arc. At the same time he walked a delicate line as he balanced Superman’s thirst for action with his good intentions. Maxwell knew that the show’s young listeners-and their parents-prized the wholesome qualities of honesty and fair play. So Superman-by now referred to as the Big Blue Boy Scout by other, edgier comic book superheroes-remained squeaky-clean on the radio."
January 1, 1970
https://en.wikiquote.org/wiki/Superman