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