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This instrument [radio] can teach. It can illuminate, yes, and it can even inspire. But it can do so only to the extent that humans are determined to use it to those ends. Otherwise it's nothing but wires and lights in a box.

Edward R. Murrow (1967). “In Search of Light: The Broadcasts of Edward R. Murrow, 1938-1961”
This instrument [radio] can teach. It can illuminate, yes, and it can even inspire. But it can do so only to the extent that humans are determined to use it to those ends. Otherwise it's nothing but wires and lights in