These, together with his "Dichos de Luz y Amor" or "Sayings of Light and Love" along with Teresa's own writings, are the most important mystical works in Spanish, and have deeply influenced later spiritual writers across the world. They include: T. S. Eliot, Thérèse de Lisieux, Edith Stein (Teresa Benedicta of the Cross) and Thomas Merton. John is said to have also influenced philosophers (Jacques Maritain), theologians (Hans Urs von Balthasar), pacifists (Dorothy Day, Daniel Berrigan and Philip Berrigan) and artists (Salvador Dalí). Pope John Paul II wrote his theological dissertation on the mystical theology of John of the Cross.