John D. Rockefeller Quotes about Ambition

John D. Rockefeller (2003). “Random Reminiscences of Men and Events”, p.133, The Minerva Group, Inc.
John D. Rockefeller (2015). “John D. Rockefeller on Making Money: Advice and Words of Wisdom on Building and Sharing Wealth”, p.16, Skyhorse Publishing, Inc.