By C. S. Lewis, Richard J. Foster, Dorothy Day, Henri J. M. Nouwen, Fyodor Dostoyevsky, Thomas Merton, Jonathan Wilson-Hartgrove, Mother Teresa, Søren Kierkegaard, Dietrich Bonhoeffer, Eberhard Arnold, Eugene H. Peterson, Joan Chittister, David Janzen, John M. Perkins, Howard A. Snyder, Kathleen Norris, Thomas R Kelly, Peter Riedemann, Jeremiah Barker, Chiara Lubich, Christine D. Pohl, Saint Benedict, Amy Carmichael, Hans Denck, Andreas Ehrenpreis, Penelope Lawson, Juan Mateos, Thomas E Powers, Christopher C Smith, Ulrich Stadler, Nicholas Ludwig von Zinzendorf