Wallace D. Wattles, William Walker Atkinson, P. T. Barnum, Benjamin Franklin, Orison Swett Marden, James Allen, Russell Conwell, Henry Harrison Brown, Thorstein Veblen, émile Coué, Kahlil Gibran, Marcus Aurelius, Niccolò Machiavelli, Lao Tzu, B. F. Austin, Charles F. Haanel, Robert Collier, Elbert Hubbard, William Crosbie Hunter, Harry A. Lewis, Florence Scovel Shinn, George Long, W. K. Marriott