Earl Nightingale
<p><b >Earl Nightingale</b> (March 12, 1921 – March 28, 1989) was an <a href="http://en.wikipedia.org/wiki/United_States" title="United States" >American</a> <a href="http://en.wikipedia.org/wiki/Motivational_speaker" title="Motivational speaker" class="mw-redirect" >motivational speaker</a> and author, known as the "Dean of Personal Development."<sup id="cite_ref-1" class="reference" ><a href="http://en.wikipedia.org/wiki/Earl_Nightingale#cite_note-1" >[1]</a></sup> He was the voice in the early 1950s of <i ><a href="http://en.wikipedia.org/wiki/Sky_King" title="Sky King" >Sky King</a></i>, the hero of a radio adventure series, and was a <a href="http://en.wikipedia.org/wiki/WGN_(AM)" title="WGN (AM)" >WGN</a> radio show host from 1950 to 1956.<sup id="cite_ref-2" class="reference" ><a href="http://en.wikipedia.org/wiki/Earl_Nightingale#cite_note-2" >[2]</a></sup> Nightingale was the author of the <i >Strangest Secret</i>, which economist Terry Savage has called “…One of the great motivational books of all time“.<sup id="cite_ref-3" class="reference" ><a href="http://en.wikipedia.org/wiki/Earl_Nightingale#cite_note-3" >[3]</a></sup></p>