George Matthew Adams, James Allen, Charles F. Haanel, Napoleon Hill, William Walker Atkinson, Marcus Aurelius, B. F Austin, P. T. Barnum, Genevieve Behrend, Dale Carnegie, Wallace D. Wattles, Florence Scovel Shinn, Sun Tzu, Lao Tzu, Benjamin Franklin, George S. Clason, Joseph Murphy, Niccolò Machiavelli, Kahlil Gibran, Elbert Hubbard, Earl Nightingale, Miyamoto Musashi, Russell H. Conwell, Charles Fillmore, Ralph Waldo Trine, F. W. Sears, Elizabeth Towne, Emmet Fox, Orison Swett Marden, H. A. Lewis, Harvey Hardman, Emile Coué & Neville Goddard
Napoleon Hill, Dale Carnegie, Benjamin Franklin, Charles F. Haanel, Florence Scovel Shinn, Wallace D. Wattles, James Allen, Lao Tzu, Khalil Gibran, Orison Swett Marden, Abner Bayley, P.T. Barnum, Marcus Aurelius, Henry Thomas Hamblin, Joseph Murphy, William Crosbie Hunter, Ralph Waldo Emerson, Henry H. Brown, Russell H. Conwell, William Atkinson, B.F. Austin, H.A. Lewis, L.W. Rogers, Douglas Fairbanks, Sun Tzu & Samuel Smiles
Napoleon Hill, Dale Carnegie, Benjamin Franklin, Charles F. Haanel, Florence Scovel Shinn, Wallace D. Wattles, James Allen, Lao Tzu, Khalil Gibran, Orison Swett Marden, Abner Bayley, P.T. Barnum, Marcus Aurelius, Henry Thomas Hamblin, Joseph Murphy, William Crosbie Hunter, Ralph Waldo Emerson, Henry H. Brown, Russell H. Conwell, William Atkinson, B.F. Austin, H.A. Lewis, L.W. Rogers, Douglas Fairbanks, Sun Tzu & Samuel Smiles
Edwin A. Abbott, Aristoteles, Dale Carnegie, Gilbert Chesterton, René Descartes, Epictetus, Marcus Aurelius Antoninus, Sigmund Freud, Hermann Hesse, David Hume, Lao Tzu, Confucius, Swami Abhedananda, Anonimous, D. H. Lawrence, Niccolò Machiavelli, Benedictus de Spinoza, John Mill, Prentice Mulford, Thomas More, Friedrich Nietzsche, J. Allanson Picton, Plato, Sun Tzu, Vātsyāyana, Voltaire, H.G. Wells & Frances Bacon