Singleness of purpose is one of the chief essentials for success in life, no matter what may be one's aim.
John D. RockefellerProbably the greatest single obstacle to the progress and happiness of the American people lies in the willingness of so many men to invest their time and money in multiplying competitive industries instead of opening up new fields, and putting their money into lines of industry and development that are needed.
John D. RockefellerWell i know that my company is not corrupt or unfair because i got all this with all my hard work. I see no reason why you say my company was corrupt may you explain to me miss [Ida] Tarbell.
John D. Rockefeller