You can measure opportunity with the same yardstick that measures the risk involved. They go together. – Earl Nightingale
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Earl Nightingale was an American radio speaker and author, dealing mostly with the subjects of human character development, motivation, and meaningful existence. He was the voice during the early 1950s of Sky King, the hero of a radio adventure series, and was a WGN radio program host from 1950 to 1956.