Marcus Aurelius, C.S. Lewis, Walt Whitman, Gerard Manley Hopkins, Daniel Berrigan, Robert Frost, George Herbert, Thomas Merton, Jalal ad-Din Muhammad ar-Rumi, Nelson Mandela, John O'Donohue, Nachman of, Rebbe Breslov, John Henry Newman, Thomas Keating, Brother Lawrence, Thomas à Kempis, Ted Loder, Francis of Assisi, Douglas MacArthur, Ignatius of Loyola, Bernard of Clairvaux, SkyLight Paths, John Philip Newell, Walter Bruggemann, Chief Yellow Lark, D.L. Mood, Rabindranath Togore