Bok av James Allen, Ralph Waldo Emerson, Dr. Joseph Murphy, Wallace D. Wattles, Benjamin Franklin, Khalil Gibran, Marcus Aurelius, Douglas Fairbanks, Lao Tzu, Sun Tzu, Russell H. Conwell, Dale Carnegie, Florence Scovel Shinn, Charles F. Haanel, P.T. Barnum, Orison Swett Marden, Samuel Smiles, L.W. Rogers,
