In 1950 Earl Nightingale was inspired by the words "we become what we think about" in Napoleon Hill's book Think and Grow Rich around the same time he bought an insurance agency. He provided weekly motivational speeches to the agency's sales staff. In 1956, he recorded a motivational speech to be played while he was on vacation. Nightingale's employees spread word of the speech, and demand for the recording grew so large that he and friend Lloyd Conant formed the Nightingale-Conant Corporation to manage sales. Requests for a recording of the message came pouring in - thousands of requests per week. Within no time, more than 200,000 people had called, written, or just walked right into Earl's office to request a copy. As years went by, that number soared above 1,000,000. Today, more than 40 years later, The Strangest Secret remains one of the most powerful and influential messages ever recorded. It continues to transform the lives of everyone who hears and heeds it. It was later adapted into print and video forms.