Source, in full
Though attributed to John D. Rockefeller, Sr. in I Want to Make Money in the Stock Market : Learn to Begin Investing Without Losing Your Life (2006) by Chris M. Hart, p. 169; this is clearly a statement of his son, John D. Rockefeller Jr., as quoted in John D. Rockefeller, Jr: A Portrait (1956) by Raymond Blaine Fosdick, p. 189: The only question with wealth is what to do with it. It can be used for evil purposes or it can be an instrumentality for constructive social living.