I have enjoyed this audiobook by Ron Chernow very much. Chernow wrote a biography on Alexander Hamilton which is unsurpassed, so I was interested in his other books and picked Rockefeller because I live near NYC which is Rockefeller country. While I have to say it is not quite as fascinating as A. Hamilton's life (but then how could it compare to the Revolutionary War days and the beginning of America's economic structure, etc.) I have still found it worthy of purchasing as it sheds light on Rockefeller's childhood (motivation) as well as sets the historical stage for the modern age of big companies from Civil War days to early 1900s. Chernow offers some profound insights.