William Crosbie Hunter, William Atkinson, Wallace D. Wattles, Sun Tzu, Samuel Smiles, Russell H. Conwell, Ralph Waldo Emerson, P.T. Barnum, Orison Swett Marden, Napoleon Hill, Marcus Aurelius, L.W. Rogers, Lao Tzu, Khalil Gibran, Joseph Murphy, James Allen, Henry Thomas Hamblin, Henry H. Brown, H.A. Lewis, Florence Scovel Shinn, Douglas Fairbanks, Dale Carnegie, Charles F. Haanel, B.F. Austin, Benjamin Franklin, Abner Bayley