In a 1917 interview, John D. Rockefeller laid out his success essentials.
Here I noted how similar Rockefeller’s thoughts to people in business are to many other intelligent fanatic business leaders.
Also, Rockefeller mentions in the interview more actions that lead to Standard Oil’s success.
John D. Rockefeller was a tough nut to crack in his day. See here how B.C. Forbes was able to get this interview with the man. Forbes also tells how he was able to get Rockefeller to get comfortable sharing many details.